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  1. Article ; Online: Right transmanubrial approach to the cervicothoracic spine with venous reconstruction.

    Yutaka, Yojiro / Date, Hiroshi / Otsuki, Bungo / Fujibayashi, Shunsuke

    Asian cardiovascular & thoracic annals

    2023  Volume 31, Issue 4, Page(s) 378–381

    Abstract: The transmanubrial approach first reported by Grunenwald in 1997 is well-known for superior sulcus lung malignancies involving the thoracic inlet. Because an anterior approach to levels below Th2 is difficult without removing the manubrium, we used the ... ...

    Abstract The transmanubrial approach first reported by Grunenwald in 1997 is well-known for superior sulcus lung malignancies involving the thoracic inlet. Because an anterior approach to levels below Th2 is difficult without removing the manubrium, we used the transmanubrial approach for anterior cervicothoracic corpectomy and fusion (C7-Th3) in a patient with bilateral lower extremity paralysis due to ossification of the posterior longitudinal ligament in the cervicothoracic spine. To ensure more working space in the deep surgical field, which was hindered by a prior cardiac operation with median sternotomy and a goiter protruding into the upper mediastinal region, the right brachiocephalic vein was temporarily divided and subsequently reconstructed using bovine pericardium.
    MeSH term(s) Humans ; Animals ; Cattle ; Thoracic Vertebrae/diagnostic imaging ; Thoracic Vertebrae/surgery ; Thoracic Vertebrae/pathology ; Manubrium/diagnostic imaging ; Manubrium/surgery ; Lung Neoplasms/pathology ; Sternotomy ; Plastic Surgery Procedures ; Cervical Vertebrae/diagnostic imaging ; Cervical Vertebrae/surgery
    Language English
    Publishing date 2023-03-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 1400468-9
    ISSN 1816-5370 ; 0218-4923
    ISSN (online) 1816-5370
    ISSN 0218-4923
    DOI 10.1177/02184923231162162
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: S2 Alar Screw Insertion Accuracy and Factors Associated With Screw Loosening and Lumbosacral Nonunion.

    Shima, Koichiro / Fujibayashi, Shunsuke / Otsuki, Bungo / Murata, Koichi / Shimizu, Takayoshi / Sono, Takashi / Matsuda, Shuichi

    World neurosurgery

    2024  Volume 184, Page(s) e129–e136

    Abstract: Objective: To investigate S2 alar screw (S2AS) accuracy and factors associated with S2AS loosening and lumbosacral nonunion.: Methods: We retrospectively reviewed patients who underwent lumbosacral fusion surgery with S2AS addition under fluoroscopy. ...

    Abstract Objective: To investigate S2 alar screw (S2AS) accuracy and factors associated with S2AS loosening and lumbosacral nonunion.
    Methods: We retrospectively reviewed patients who underwent lumbosacral fusion surgery with S2AS addition under fluoroscopy. S2AS loosening and lumbosacral nonunion were analyzed using a 1-year postoperative computed tomography. S2AS insertion accuracy was originally classified as accurate, short, anterior perforation, lateral perforation, and sacroiliac joint (SIJ) deviation among lateral perforation. Clinical data including sex, age, body mass index, fused segments, fusion procedure, primary or revision surgery, Japanese Orthopedic Association scores and complications were collected. Factors associated with S2AS loosening and lumbosacral nonunion were analyzed.
    Results: A total of 37 patients (74 screws, age: 63.78 ± 13.57 years, female/male: 14/23 patients, body mass index: 23.11 ± 2.53, fused segments: 1-4 levels, revision: 38%) were included. S2AS loosening and lumbosacral nonunion were observed in 18 screws (13%) and 8 patients (22%) respectively. Only 35 screws (47%) were inserted accurately in our classification. Short, lateral perforation, and anterior perforation were observed in 14 screws (19%), 22 screws (30%), and 3 screws (4.1%). SIJ deviation was seen in 15 screws (20%) Factors associated with S2AS loosening were older age (P = 0.038), fusion levels (P = 0.011), and SIJ deviation (P < 0.001). S2AS loosening affects S1 pedicle screw (S1PS) loosening (P = 0.001). Furthermore, S2AS loosening is a risk factor for lumbosacral nonunion (P = 0.046).
    Conclusions: S2AS insertion under fluoroscopy is inaccurate. S2AS loosening induces S1PS loosening and lumbosacral nonunion. Surgeons should avoid deviating to SIJ, especially in older patients and relatively longer fusion.
    MeSH term(s) Humans ; Male ; Female ; Aged ; Middle Aged ; Retrospective Studies ; Pedicle Screws ; Tomography, X-Ray Computed ; Spinal Fusion/methods ; Fluoroscopy
    Language English
    Publishing date 2024-01-20
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2534351-8
    ISSN 1878-8769 ; 1878-8750
    ISSN (online) 1878-8769
    ISSN 1878-8750
    DOI 10.1016/j.wneu.2024.01.071
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Sagittal Section Hounsfield Units of the Upper Instrumented Vertebrae as a Predictor of Proximal Junctional Vertebral Fractures Following Adult Spinal Deformity Surgery.

    Murata, Koichi / Otsuki, Bungo / Shimizu, Takayoshi / Sono, Takashi / Fujibayashi, Shunsuke / Matsuda, Shuichi

    Asian spine journal

    2024  

    Abstract: Study design: A retrospective observational study.: Purpose: This study aimed to determine an accurate and convenient screening method for predicting proximal junctional fractures (PJFr) following surgery for adult spinal deformity (ASD) using ... ...

    Abstract Study design: A retrospective observational study.
    Purpose: This study aimed to determine an accurate and convenient screening method for predicting proximal junctional fractures (PJFr) following surgery for adult spinal deformity (ASD) using computed tomography (CT)-based measurement of Hounsfield units (HUs).
    Overview of literature: CT-based measurement of HUs is an alternative tool for assessing bone mineral density. However, the optimal method for predicting adjacent vertebral fractures following spinal fusion using HUs remains unclear.
    Methods: This retrospective observational study included 42 patients who underwent reconstructive surgery for ASD. Elliptical regions of interest (ROIs) on the axial section and rectangular ROIs on the sagittal section were placed at the upper instrumented vertebrae (UIV), UIV+1, and UIV+2. In addition, the HU value of the L2 vertebra was used as the representative.
    Results: PJFr occurred in 28.6% of patients within 2 years following surgery. The HU values obtained from the axial sections of L2, UIV, UIV+1, and UIV+2 were not significantly associated with the incidence of PJFr within 2 years, except for the ROI set in the lower region of the L2 vertebra. However, the HU value of the anterior third of the UIV in the sagittal section was significantly lower in the PJFr group than in the nonPJFr group (87.0 vs. 160.3, p =0.001). A UIV HU value of <100 was associated with a higher incidence of PJFr than an HU vaue of >100 (p <0.05).
    Conclusions: Measurements of HU in the anterior one-third of the UIV in the sagittal section demonstrated predictive ability for PJFr following ASD surgery. A UIV HU value of <100 emerged as a risk factor for PJFr.
    Language English
    Publishing date 2024-04-23
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2559763-2
    ISSN 1976-7846 ; 1976-1902
    ISSN (online) 1976-7846
    ISSN 1976-1902
    DOI 10.31616/asj.2023.0339
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Low hounsfield unit values at sagittal section on computed tomography predicts vertebral fracture following short spinal fusion.

    Murata, Koichi / Fujibayashi, Shunsuke / Otsuki, Bungo / Shimizu, Takayoshi / Matsuda, Shuichi

    Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association

    2023  

    Abstract: Background: Preoperative identification of osteoporosis during spine surgery is of critical importance. Additionally, the Hounsfield units (HU) measured using computed tomography (CT) have gained considerable attention. This study aimed to propose a ... ...

    Abstract Background: Preoperative identification of osteoporosis during spine surgery is of critical importance. Additionally, the Hounsfield units (HU) measured using computed tomography (CT) have gained considerable attention. This study aimed to propose a more accurate and convenient screening method for predicting vertebral fractures after spinal fusion in elderly patients by analyzing the HU value of different range of interests of thoracolumbar spine.
    Methods: Our sample pool for analysis consisted of 137 elderly female patients aged >70 years who underwent one- or two-level spinal fusion surgery with a diagnosis of adult degenerative lumbar disease. The HU values of the anterior 1/3 of the vertebral bodies based on sagittal plane and those of vertebral bodies based on axial plane at T11-L5 were measured using the perioperative CT. The incidence of postoperative vertebral fractures with respect to the HU value was investigated.
    Results: Vertebral fractures were identified in 16 patients during the mean follow-up period of 3.8 years. While no significant association was found between HU value of L1 vertebral body or minimum HU value from axial plane and the incidence of the postoperative vertebral fracture, the minimum vertebral HU value of the anterior 1/3 of vertebral body from sagittal plane was associated with the incidence of the postoperative vertebral fracture. Patients with a minimum anterior 1/3 vertebral HU value of <80 had a higher incidence of postoperative vertebral fractures. The adjacent vertebral fractures occurred at the level of the vertebra with the lowest HU value, with a high probability. The existence of the vertebra with a minimum HU value of <80 within two levels of upper instrumented vertebrae was a risk factor for adjacent vertebral fracture.
    Conclusion: HU measurement of the anterior 1/3 of vertebral body predicts the risk of vertebral fracture after short spinal fusion surgery.
    Language English
    Publishing date 2023-03-21
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1314243-4
    ISSN 1436-2023 ; 0949-2658
    ISSN (online) 1436-2023
    ISSN 0949-2658
    DOI 10.1016/j.jos.2023.03.008
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  5. Article ; Online: Sacral Nerve-Sparing Piecemeal Spondylectomy for Giant Cell Tumor of Bone in the Sacrum: Surgical Strategy and Accurate Tumor Location Identification.

    Otsuki, Bungo / Sakamoto, Akio / Fujibayashi, Shunsuke / Shimizu, Takayoshi / Murata, Koichi / Noguchi, Takashi / Matsuda, Shuichi

    Spine surgery and related research

    2023  Volume 8, Issue 1, Page(s) 110–113

    Language English
    Publishing date 2023-09-04
    Publishing country Japan
    Document type Journal Article
    ISSN 2432-261X
    ISSN (online) 2432-261X
    DOI 10.22603/ssrr.2023-0145
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Preoperative and Postoperative Factors Affecting Patient Satisfaction with Double-Door Laminoplasty for Cervical Spondylotic Myelopathy.

    Yoshiyama, Takaki / Fujibayashi, Shunsuke / Otsuki, Bungo / Shimizu, Takayoshi / Murata, Koichi / Matsuda, Shuichi

    Spine surgery and related research

    2023  Volume 7, Issue 5, Page(s) 421–427

    Abstract: Introduction: Few articles have investigated patient satisfaction with laminoplasty in patients with cervical spondylotic myelopathy (CSM) alone, excluding other diseases, such as ossification of the posterior longitudinal ligament. In this study, we ... ...

    Abstract Introduction: Few articles have investigated patient satisfaction with laminoplasty in patients with cervical spondylotic myelopathy (CSM) alone, excluding other diseases, such as ossification of the posterior longitudinal ligament. In this study, we aimed to investigate patient satisfaction after double-door laminoplasty for CSM and determine the preoperative and postoperative factors that affect patient satisfaction.
    Methods: We retrospectively reviewed cases of laminoplasty for CSM. We measured sagittal imaging parameters (cervical lordosis [CL], C2-C7 cervical sagittal vertical axis [cSVA], and T1 slope [T1S]), Japanese Orthopaedic Association (JOA) score, and patient-reported outcomes (PROs) such as the neck disability index (NDI) and visual analog scale (VAS) preoperatively, 3 months postoperatively, and 1 year postoperatively. In addition, a multiple regression analysis was performed to investigate factors affecting patient satisfaction.
    Results: Ninety patients were included in the analysis. After surgery, CL decreased significantly (p<0.01), whereas cSVA increased significantly (p<0.01). No significant differences were observed in the preoperative and postoperative T1S values (p=0.61). The JOA, NDI, and VAS scores significantly improved postoperatively (p<0.01). The median patient satisfaction was 85 (range, 12-100) at 1 year postoperatively and 80 (range, 25-100) at 3 months postoperatively. In the multiple regression analysis, lower-extremity sensory disorder in the JOA score at 1 year postoperatively (p<0.01) and VAS scores for neck pain preoperatively and 1 year postoperatively (p=0.01 and p<0.01, respectively) were determined as factors affecting patient satisfaction.
    Conclusions: Cervical laminoplasty is a useful and satisfactory surgical procedure to restore patient function. However, patients with severe preoperative and postoperative neck pain and those with severe postoperative sensory disorders of the lower extremities may be less satisfied with the procedure. It is important to keep these things in mind when treating patients.
    Language English
    Publishing date 2023-04-21
    Publishing country Japan
    Document type Journal Article
    ISSN 2432-261X
    ISSN (online) 2432-261X
    DOI 10.22603/ssrr.2023-0022
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Feasibility of total and partial uncinectomy during anterior cervical approach: MRI-based analysis of 176 patients regarding vertebral artery location.

    Shima, Koichiro / Shimizu, Takayoshi / Fujibayashi, Shunsuke / Murata, Koichi / Matsuda, Shuichi / Otsuki, Bungo

    European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society

    2023  Volume 32, Issue 10, Page(s) 3540–3546

    Abstract: Purpose: To determine the technical feasibility of uncinate process (UP) resection (uncinectomy) during anterior cervical approach with risk-avoidance of vertebral artery (VA) injury.: Methods: One hundred and seventy-six magnetic resonance imaging ... ...

    Abstract Purpose: To determine the technical feasibility of uncinate process (UP) resection (uncinectomy) during anterior cervical approach with risk-avoidance of vertebral artery (VA) injury.
    Methods: One hundred and seventy-six magnetic resonance imaging images with cervical spondylosis were evaluated. The diameter between UP and VA (UP-VA distance), the presence of a fat plane, and the VA's anterior-posterior position relative to UP (anterior[A], middle[M], posterior[P]) at C3-4 to C6-7 segments were investigated. Subsequently, easy-to-use classifications were developed according to the feasibility of total and partial uncinectomy. Total uncinectomy: easy (distance: > 2 mm); moderate (distance: ≤ 2 and fat plane: +); advanced (no fat plane). Partial uncinectomy: easy (distance: > 2 mm and P, A, or M position); moderate (distance: ≤ 2; fat plane: + and P position), and advanced (no fat plane and P position).
    Results: UP-VA distance of C5-6 on the right side (left/right: 0.41/0.31 mm) was the smallest. The ratio of no fat plane of C5-6 (46.6%/49.4%) was the highest. C5-6 had a high rate of P position (7.4%/8.5%) while C6-7 had a high rate of A position (19.3%/18.2%). More than 90% individuals were classified as easy for partial uncinectomy at any vertebral segment (C3-7), while more than 30% were classified as advanced at C4-7 with the highest rate at C5-6 for total uncinectomy.
    Conclusion: When performing uncinectomy during the anterior cervical approach, the C5-6 segment may be at the greatest risk of VA injury. Hence, preoperative MR images should be thoroughly evaluated to avoid VA injury.
    MeSH term(s) Humans ; Vertebral Artery/diagnostic imaging ; Vertebral Artery/surgery ; Feasibility Studies ; Neck ; Spinal Cord ; Magnetic Resonance Imaging ; Neck Injuries ; Cervical Vertebrae/diagnostic imaging ; Cervical Vertebrae/surgery
    Language English
    Publishing date 2023-08-27
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1115375-1
    ISSN 1432-0932 ; 0940-6719
    ISSN (online) 1432-0932
    ISSN 0940-6719
    DOI 10.1007/s00586-023-07888-x
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  8. Article ; Online: Risk of further surgery after decompression in patients with diffuse idiopathic skeletal hyperostosis extending to the lumbar segments: focus on the number of residual lumbar/lumbosacral and sacroiliac mobile segments.

    Tanaka, Atsushi / Shimizu, Takayoshi / Kawai, Toshiyuki / Fujibayashi, Shunsuke / Murata, Koichi / Matsuda, Shuichi / Otsuki, Bungo

    European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society

    2023  Volume 32, Issue 7, Page(s) 2336–2343

    Abstract: Purpose: Patients with diffuse idiopathic skeletal hyperostosis (DISH) that extends to the lumbar segments (L-DISH) have a high risk of further surgery after lumbar decompression. However, few studies have focused on the ankylosis status of the residual ...

    Abstract Purpose: Patients with diffuse idiopathic skeletal hyperostosis (DISH) that extends to the lumbar segments (L-DISH) have a high risk of further surgery after lumbar decompression. However, few studies have focused on the ankylosis status of the residual caudal segments, including the sacroiliac joint (SIJ). We hypothesized that patients with more ankylosed segments beside the operated level, including the SIJ, would be at a higher risk of further surgery.
    Methods: A total of 79 patients with L-DISH who underwent decompression surgery for lumbar stenosis at a single academic institution between 2007 and 2021 were enrolled. The baseline demographics and radiological findings by CT imaging focusing on the ankylosing condition of the residual lumbar segments and SIJ were collected. Cox proportional hazard analysis was conducted to investigate the risk factors for further surgery after lumbar decompression.
    Results: The rate of further surgery was 37.9% during an average of 48.8 months of follow-up. Cox proportional hazard analysis demonstrated that the presence of fewer than three segments of non-operated mobile caudal segments was an independent predictor for further surgery (including both the same and adjacent levels) after lumbar decompression (adjusted hazard ratio 2.53, 95%CI [1.12-5.70]).
    Conclusions: L-DISH patients with fewer than three mobile caudal segments besides index decompression levels are at a high risk of further surgery. Ankylosis status of the residual lumbar segments and SIJ should be thoroughly evaluated using CT during preoperative planning.
    MeSH term(s) Humans ; Hyperostosis, Diffuse Idiopathic Skeletal/complications ; Hyperostosis, Diffuse Idiopathic Skeletal/diagnostic imaging ; Hyperostosis, Diffuse Idiopathic Skeletal/surgery ; Lumbar Vertebrae/diagnostic imaging ; Lumbar Vertebrae/surgery ; Constriction, Pathologic/surgery ; Ankylosis ; Decompression
    Language English
    Publishing date 2023-05-23
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1115375-1
    ISSN 1432-0932 ; 0940-6719
    ISSN (online) 1432-0932
    ISSN 0940-6719
    DOI 10.1007/s00586-023-07773-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Minimally invasive LLIF surgery to decrease the occurrence of adjacent-segment disease compared to conventional open TLIF.

    Otsuki, Bungo / Fujibayashi, Shunsuke / Shimizu, Takayoshi / Murata, Koichi / Masuda, Soichiro / Matsuda, Shuichi

    European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society

    2023  Volume 32, Issue 9, Page(s) 3200–3209

    Abstract: Purpose: Lateral lumbar interbody fusion with percutaneous pedicle screw fixation (Mis-LLIF) can establish indirect decompression by lifting the vertebra with a large intervertebral cage, which causes less damage to the posterior elements. Thus, Mis- ... ...

    Abstract Purpose: Lateral lumbar interbody fusion with percutaneous pedicle screw fixation (Mis-LLIF) can establish indirect decompression by lifting the vertebra with a large intervertebral cage, which causes less damage to the posterior elements. Thus, Mis-LLIF is expected to reduce the incidence of adjacent segment disease (ASD). The aim of the study was to compare the occurrence of ASD between Mis-LLIF and conventional open transforaminal interbody fusion (TLIF).
    Methods: A total of 156 patients (TLIF group = 88, Mis-LLIF group = 68) who underwent single-level lumbar interbody fusion (L2/3, L3/4, or L4/5) at a single institution between 2003 and 2018 with minimum 2-year follow-up were retrospectively reviewed. The incidence of symptomatic ASD requiring reoperation (S-ASD) and radiological adjacent segment degeneration (R-ASD) 2 years postoperatively were investigated between 51 paired patients from both groups who were propensity score (PS) matched by demographic and baseline clinical data. The effect of characteristics arising from differences in surgical methods between Mis-LLIF and TLIF, such as the amount of distraction of the index fused level (∆H), on S-ASD and R-ASD was also examined.
    Results: There were no significant differences in the incidence of S-ASD between the Mis-LLIF and TLIF groups (adjusted OR 1.3; 95% CI 0.41-3.9). There was no significant difference in the incidence of R-ASD between the Mis-LLIF and TLIF groups both at the cranial (adjusted OR 1.0; 95% CI 0.22-4.5) and caudal level (adjusted OR 1.5; 95% CI 0.44-5.3). On the other hand, ∆H was significantly higher in the Mis-LLIF group than in the TLIF group (3.6 mm vs. 1.7 mm, respectively, P < 0.0001), and was extracted as a significant independent risk factor for S-ASD (adjusted HR 2.7; 95% CI 1.1-6.3) and R-ASD at the cranial side (adjusted HR 6.4; 95% CI 1.7-24) in multivariable analysis with PS adjustment.
    Conclusions: The incidence of R-ASD or S-ASD was not significantly reduced in the Mis-LLIF group compared to the TLIF group, with greater ∆H potentially being a contributing factor. Using a thin cage in both TLIF and Mis-LLIF may decrease the occurrence of ASD.
    MeSH term(s) Humans ; Retrospective Studies ; Lumbar Vertebrae/diagnostic imaging ; Lumbar Vertebrae/surgery ; Spinal Fusion/adverse effects ; Spinal Fusion/methods ; Minimally Invasive Surgical Procedures/adverse effects ; Minimally Invasive Surgical Procedures/methods ; Lumbosacral Region/surgery ; Treatment Outcome
    Language English
    Publishing date 2023-06-14
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1115375-1
    ISSN 1432-0932 ; 0940-6719
    ISSN (online) 1432-0932
    ISSN 0940-6719
    DOI 10.1007/s00586-023-07806-1
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  10. Article ; Online: Erratum to: Reoperation Rates of Microendoscopic Discectomy Compared With Conventional Open Lumbar Discectomy: A Large-database Study.

    Masuda, Soichiro / Fukasawa, Toshiki / Takeuchi, Masato / Fujibayashi, Shunsuke / Otsuki, Bungo / Murata, Koichi / Shimizu, Takayoshi / Matsuda, Shuichi / Kawakami, Koji

    Clinical orthopaedics and related research

    2024  Volume 482, Issue 3, Page(s) 569

    Language English
    Publishing date 2024-02-14
    Publishing country United States
    Document type Journal Article ; Published Erratum
    ZDB-ID 80301-7
    ISSN 1528-1132 ; 0009-921X
    ISSN (online) 1528-1132
    ISSN 0009-921X
    DOI 10.1097/CORR.0000000000002982
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