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  1. Article: Outcome of severe sepsis in pediatric oncology patients.

    Fiser, Richard T / West, Nancy K / Bush, Andrew J / Sillos, Elaine M / Schmidt, Jeffrey E / Tamburro, Robert F

    Pediatric critical care medicine : a journal of the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies

    2005  Volume 6, Issue 5, Page(s) 531–536

    Abstract: Objective: To describe survival to intensive care unit (ICU) discharge and 6-month survival in a large cohort of pediatric oncology patients with severe sepsis.: Design: Retrospective analysis.: Setting: The ICU of a single pediatric oncology ... ...

    Abstract Objective: To describe survival to intensive care unit (ICU) discharge and 6-month survival in a large cohort of pediatric oncology patients with severe sepsis.
    Design: Retrospective analysis.
    Setting: The ICU of a single pediatric oncology center.
    Patients: Patients with cancer admitted to the ICU of St. Jude Children's Research Hospital between January 1, 1990, and December 31, 2002, who met the following criteria: 1) severe sepsis by ACCP/SCCM (American College of Chest Physicians/Society of Critical Care Medicine) Consensus Conference criteria and 2) receipt of fluid boluses of > or =30 mL/kg to correct hypoperfusion or receipt of a dopamine infusion of >5 microg.kg.min for inotropic support.
    Interventions: None.
    Measurements and main results: Data evaluated were demographic variables, oncologic diagnosis and time from diagnosis to ICU admission, Pediatric Risk of Mortality III score and absolute neutrophil count at admission, use of inotropes or pressors, use of mechanical ventilation, maximum organ system failure score, blood culture results, survival to ICU discharge, and 6-month survival. We identified 446 ICU admissions of 359 eligible patients. Overall ICU mortality was 76 of 446 (17%): 40 of 132 (30%) in post-bone marrow transplant (BMT) admissions and 36 of 314 (12%) in non-BMT admissions (p < .0001). In the 106 admissions requiring both mechanical ventilation and inotropic support, ICU mortality was 68 of 106 (64%). Regarding individual patients, 6-month survival was 170 of 248 (69%) among non-BMT patients vs. 43 of 111 (39%) for BMT patients (p < .001). When the 38 patients who survived to ICU discharge after requiring both mechanical ventilation and inotropic/vasopressor support are considered, 27 (71%) were alive 6 months after ICU discharge (22 of 27 [81%] non-BMT vs. 5 of 27 BMT [19%; p < .001]). ICU mortality varied by causative pathogen, from 63% for fungal sepsis (12 of 19) to 9% (5 of 53) for Gram-negative sepsis. Logistic regression analysis of factors significantly associated with ICU mortality in admissions requiring both mechanical ventilation and inotropic support identified four variables: BMT (odds ratio, 2.9; 95% confidence interval, 1.1-7.4; p = .03); fungal sepsis (odds ratio, 10.7; 95% confidence interval, 1.2-94.4; p = .03); use of multiple inotropes (odds ratio, 4.1; 95% confidence interval, 1.4-11.8; p = .01); and Pediatric Risk of Mortality III score (odds ratio, 1.1; 95% confidence interval, 1.0-1.2; p = .04).
    Conclusions: In a large series of pediatric oncology patients with severe sepsis, ICU mortality was only 17% overall, although mortality remained quite high in the higher acuity patients. Mortality among the higher acuity patients was significantly associated with only a small number of variables. The number of patients alive at 6 months and the encouraging ICU survival rate further justifies the use of aggressive ICU interventions in this population.
    MeSH term(s) Adolescent ; Bone Marrow Transplantation ; Cardiotonic Agents/administration & dosage ; Child ; Cohort Studies ; Hospital Mortality ; Humans ; Intensive Care Units, Pediatric ; Neoplasms/complications ; Respiration, Artificial ; Retrospective Studies ; Sepsis/complications ; Sepsis/mortality ; Survival Rate
    Chemical Substances Cardiotonic Agents
    Language English
    Publishing date 2005-09-01
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 2052349-X
    ISSN 1947-3893 ; 1529-7535
    ISSN (online) 1947-3893
    ISSN 1529-7535
    DOI 10.1097/01.pcc.0000165560.90814.59
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Unilateral diaphragmatic paralysis inhibits postnatal lung growth in the piglet.

    Sillos, E M / Donnelly, D F / Mansell, A L

    Pediatric research

    1988  Volume 23, Issue 5, Page(s) 463–465

    Abstract: To test the hypothesis that regional growth of lung parenchyma depends on regional distending pressure, left cervical phrenectomy was done in ten 2-month-old piglets. The unilateral diaphragmatic paralysis reduced mean transpulmonary pressure in the left ...

    Abstract To test the hypothesis that regional growth of lung parenchyma depends on regional distending pressure, left cervical phrenectomy was done in ten 2-month-old piglets. The unilateral diaphragmatic paralysis reduced mean transpulmonary pressure in the left hemithorax from 5.5 +/- 1.0 (means +/- SD) to 2.5 +/- 1.2 cm H2O (p less than 0.01, n = 5). When five of the piglets were killed 48 h later, wet lung weight, total protein content, and nucleic acid content did not differ from values in the five sham operated controls. The five remaining phrenectomized piglets were compared to their five sham-operated controls 7 days after surgery. Wet weight of the left lung was reduced by 29% (p less than 0.01) and DNA content was reduced by 18% (p less than 0.05). Wet weight of the right lung, contralateral to the paralyzed hemidiaphragm, was reduced by 11% (p less than 0.05). At this time, body weight, bilateral transpulmonary pressure, and ratios of total protein/DNA and RNA/DNA in lung tissue did not differ from the sham-operated controls. These results suggest that regional growth of lung parenchyma by cell proliferation adjusted to changes in regional transpulmonary pressure caused by the unilateral phrenectomy.
    MeSH term(s) Animals ; Lung/growth & development ; Lung/physiology ; Lung/physiopathology ; Male ; Phrenic Nerve/physiology ; Pressure ; Pulmonary Alveoli/innervation ; Pulmonary Alveoli/physiology ; Respiratory Paralysis/physiopathology ; Swine
    Language English
    Publishing date 1988-05
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 4411-8
    ISSN 1530-0447 ; 0031-3998
    ISSN (online) 1530-0447
    ISSN 0031-3998
    DOI 10.1203/00006450-198805000-00005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Pathophysiology-directed therapy for acute hypoxemic respiratory failure in acute myeloid leukemia with hyperleukocytosis.

    Schmidt, Jeffrey E / Tamburro, Robert F / Sillos, Elaine M / Hill, D Ashley / Ribeiro, Raul C / Razzouk, Bassem I

    Journal of pediatric hematology/oncology

    2003  Volume 25, Issue 7, Page(s) 569–571

    Abstract: A 17-year-old with acute myeloid leukemia M4 and hyperleukocytosis developed fulminant hypoxemic respiratory failure at presentation. After failing to respond to conventional mechanical ventilation and leukapheresis, he was started on inhaled nitric ... ...

    Abstract A 17-year-old with acute myeloid leukemia M4 and hyperleukocytosis developed fulminant hypoxemic respiratory failure at presentation. After failing to respond to conventional mechanical ventilation and leukapheresis, he was started on inhaled nitric oxide (iNO) with dramatic improvement in oxygenation. Following graduated chemotherapy, his pulmonary status again deteriorated coincident with tumor lysis. After failing to respond to increases in iNO, he was placed in prone position with immediate improvement. The patient was successfully extubated. Patients with myelomonocytic leukemias are at risk for early death due to pulmonary complications. The use of adjuvant therapies directed by specific pathophysiology might decrease this risk.
    MeSH term(s) Administration, Inhalation ; Adolescent ; Antineoplastic Combined Chemotherapy Protocols/therapeutic use ; Humans ; Leukemia, Myeloid, Acute/complications ; Leukemia, Myeloid, Acute/drug therapy ; Leukocytosis/complications ; Male ; Nitric Oxide/administration & dosage ; Nitric Oxide/therapeutic use ; Oxygen/blood ; Respiratory Distress Syndrome, Adult/etiology ; Respiratory Distress Syndrome, Adult/physiopathology ; Respiratory Distress Syndrome, Adult/therapy ; Treatment Outcome
    Chemical Substances Nitric Oxide (31C4KY9ESH) ; Oxygen (S88TT14065)
    Language English
    Publishing date 2003-04-28
    Publishing country United States
    Document type Case Reports ; Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 1231152-2
    ISSN 1536-3678 ; 1077-4114 ; 0192-8562
    ISSN (online) 1536-3678
    ISSN 1077-4114 ; 0192-8562
    DOI 10.1097/00043426-200307000-00015
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Changes in outcomes (1996-2004) for pediatric oncology and hematopoietic stem cell transplant patients requiring invasive mechanical ventilation.

    Tamburro, Robert F / Barfield, Raymond C / Shaffer, Michele L / Rajasekaran, Surender / Woodard, Paul / Morrison, R Ray / Howard, Scott C / Fiser, Richard T / Schmidt, Jeffrey E / Sillos, Elaine M

    Pediatric critical care medicine : a journal of the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies

    2008  Volume 9, Issue 3, Page(s) 270–277

    Abstract: Objective: To assess the following hypotheses regarding mechanically ventilated pediatric oncology patients, including those receiving hematopoietic stem cell transplant (HSCT) and those not receiving HSCT: 1) outcomes are more favorable for ... ...

    Abstract Objective: To assess the following hypotheses regarding mechanically ventilated pediatric oncology patients, including those receiving hematopoietic stem cell transplant (HSCT) and those not receiving HSCT: 1) outcomes are more favorable for nontransplant oncology patients than for those requiring HSCT; 2) outcomes have improved for both populations over time; and 3) there are factors available during the time of mechanical ventilation that identify patients with a higher likelihood of dying.
    Design: Retrospective review.
    Setting: Free-standing, tertiary care, pediatric hematology oncology hospital.
    Patients: All patients requiring invasive mechanical ventilation with a diagnosis of cancer or following HSCT from January 1996 to December 2004.
    Interventions: Bivariate and multivariate analysis. Dates of admission were grouped into time periods for analysis: 1996-1998, 1999-2001, and 2002-2004.
    Measurements and main results: There were 401 courses of mechanical ventilation (329 patients) analyzed. Forty-five percent of HSCT admissions (92 of 206) vs. 75% of non-HSCT oncology admissions (146 of 195) were extubated and discharged from the pediatric intensive care unit (p < .0001). Twenty-five percent of HSCT vs. 60% of non-HSCT admissions survived 6 months (p < .0001). Among admissions with an abnormal chest radiograph and a PaO2/FiO2 ratio <200, pediatric intensive care unit survival increased for each successive time period, with 45% of HSCT and 83% of non-HSCT admissions surviving during 2002-2004. In multivariate analysis of all study patients, Pediatric Risk of Mortality scores on the day of intubation, allogeneic HSCT, cardiovascular failure, hepatic failure, neurologic failure, a previous course of mechanical ventilation within 6 months, and the time period intubated were associated with mortality. With the exception of time period, these same variables were associated with mortality in multivariate analysis of only HSCT patients.
    Conclusions: HSCT patients who require mechanical ventilation have worse outcomes than non-HSCT oncology patients. Outcomes for both groups have improved over time. Allogeneic transplant, higher Pediatric Risk of Mortality scores, need for repeated mechanical ventilation, and concomitant organ system dysfunction are risk factors for death.
    MeSH term(s) Child ; Cohort Studies ; Hematopoietic Stem Cell Transplantation ; Humans ; Neoplasms/physiopathology ; Neoplasms/surgery ; Pediatrics ; Respiration, Artificial ; Retrospective Studies ; Treatment Outcome
    Language English
    Publishing date 2008-05
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2052349-X
    ISSN 1947-3893 ; 1529-7535
    ISSN (online) 1947-3893
    ISSN 1529-7535
    DOI 10.1097/PCC.0b013e31816c7260
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Lactic acidosis: a metabolic complication of hematologic malignancies: case report and review of the literature.

    Sillos, E M / Shenep, J L / Burghen, G A / Pui, C H / Behm, F G / Sandlund, J T

    Cancer

    2001  Volume 92, Issue 9, Page(s) 2237–2246

    Abstract: Background: Lactic acidosis (LA) associated with hematologic malignancies is rare, ominous, and generally occurs in adults. Its pathogenesis is poorly understood.: Methods: The authors present one case of childhood lymphoma and two cases of childhood ...

    Abstract Background: Lactic acidosis (LA) associated with hematologic malignancies is rare, ominous, and generally occurs in adults. Its pathogenesis is poorly understood.
    Methods: The authors present one case of childhood lymphoma and two cases of childhood leukemia associated with LA, and they review the available literature. Plasma concentrations of insulin-like growth factors (IGFs), IGF binding proteins (IGFBPs), and tumor necrosis factor (TNF)-alpha were retrospectively measured to elucidate the pathogenesis of LA.
    Results: Lactic acidosis has been reported to date in 28 cases of lymphoma and 25 cases of leukemia, including the authors' cases. Ongoing rapid cellular proliferation was indicated in all leukemia cases. The liver was involved in 43 of the 53 cases, and hypoglycemia was present in 20. The acidosis improved only if the disease responded to chemotherapy. Remission was achieved in only five of the reported cases. In the authors' three cases, LA was associated with altered concentrations of IGFs, IGFBPs, and TNF-alpha, although causality was not established.
    Conclusions: Lactic acidosis in association with hematologic malignancies carries an extremely poor prognosis. Because cancer cells have a high rate of glycolysis and produce a large quantity of lactate, this condition may result from an imbalance between lactate production and hepatic lactate utilization. The authors speculate that the IGF system is involved in the pathophysiology of LA in these patients. Only chemotherapy so far has been effective in correcting the acute acidosis in a few patients; however, it has not necessarily improved ultimate outcome.
    MeSH term(s) Acidosis, Lactic/etiology ; Acidosis, Lactic/pathology ; Adolescent ; Child ; Female ; Glycolysis ; Humans ; Leukemia/complications ; Leukemia-Lymphoma, Adult T-Cell/complications ; Lymphoma/complications ; Male ; Prognosis ; Retrospective Studies ; Somatomedins/pharmacology
    Chemical Substances Somatomedins
    Language English
    Publishing date 2001-11-01
    Publishing country United States
    Document type Case Reports ; Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 1429-1
    ISSN 1097-0142 ; 0008-543X ; 1934-662X
    ISSN (online) 1097-0142
    ISSN 0008-543X ; 1934-662X
    DOI 10.1002/1097-0142(20011101)92:9<2237::aid-cncr1569>3.0.co;2-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Characteristics associated with successful weaning in ventilator-dependent preterm infants.

    Sillos, E M / Veber, M / Schulman, M / Krauss, A N / Auld, P A

    American journal of perinatology

    1992  Volume 9, Issue 5-6, Page(s) 374–377

    Abstract: Eighteen ventilator-dependent preterm infants with hyaline membrane disease were studied for 24 hours before and after an attempt at extubation. All were treated with theophylline prior to weaning and achieved average levels of 8.9 +/- 1.7 micrograms/ml ( ...

    Abstract Eighteen ventilator-dependent preterm infants with hyaline membrane disease were studied for 24 hours before and after an attempt at extubation. All were treated with theophylline prior to weaning and achieved average levels of 8.9 +/- 1.7 micrograms/ml (49 +/- 9 mumol/liter) in 13 successfully weaned infants and 8.4 +/- 1.1 micrograms/ml (47 +/- 6 mumol/liter) in 5 infants not extubated, p > 0.05. Infants successfully weaned were significantly (p < 0.01) older, more mature (29 +/- 1 versus 26 +/- 2 weeks' gestational age) and heavier (1107 +/- 236 versus 1016 +/- 256 gm) than infants not successfully extubated. Infants successfully weaned differed only in developing a greater maximal inspiratory force (33.8 +/- 12.3 versus 23.3 +/- 15.0 cm H2O) and higher compliance (1.1 +/- 0.3 versus 0.7 +/- 0.3) during the preweaning treatment period. These results indicate that maturity and size play a significant role in the ability to wean a preterm infant from the ventilator successfully, that maximal inspiratory force and compliance are higher in preterm infants who can be successfully extubated, and that methylxanthines do not uniformly improve pulmonary function in all potentially extubatable preterm infants.
    MeSH term(s) Humans ; Hyaline Membrane Disease/therapy ; Infant ; Infant, Newborn ; Inspiratory Capacity ; Intubation, Intratracheal ; Lung Compliance ; Theophylline/therapeutic use ; Time Factors ; Ventilator Weaning
    Chemical Substances Theophylline (C137DTR5RG)
    Language English
    Publishing date 1992-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 605671-4
    ISSN 1098-8785 ; 0735-1631
    ISSN (online) 1098-8785
    ISSN 0735-1631
    DOI 10.1055/s-2007-999268
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Effects of aerosolized synthetic surfactant, atovaquone, and the combination of these on murine Pneumocystis carinii pneumonia.

    Hughes, W T / Sillos, E M / LaFon, S / Rogers, M / Woolley, J L / Davis, C / Studenberg, S / Pattishall, E / Freeze, T / Snyder, G / Staton, S

    The Journal of infectious diseases

    1998  Volume 177, Issue 4, Page(s) 1046–1056

    Abstract: An immunosuppressed rat model was used to determine the pharmacokinetics of aerosolized atovaquone (administered with and without a synthetic surfactant) and to evaluate the efficacy of inhaled atovaquone in the prevention and treatment of Pneumocystis ... ...

    Abstract An immunosuppressed rat model was used to determine the pharmacokinetics of aerosolized atovaquone (administered with and without a synthetic surfactant) and to evaluate the efficacy of inhaled atovaquone in the prevention and treatment of Pneumocystis carinii pneumonia (PCP). After a single dose by aerosol, mean peak concentrations of atovaquone averaged 52 microg/mL in plasma and 31 microg/g in lungs of rats infected with P. carinii. When atovaquone was combined with surfactant, mean peak concentrations of 94 microg/mL in plasma and 51 microg/g in lung were achieved. Aerosolized synthetic surfactant alone significantly increased survival of rats with PCP and, when combined with atovaquone, increased plasma and lung concentrations of the drug and eradication of the organism.
    MeSH term(s) Administration, Inhalation ; Animals ; Anti-Infective Agents/administration & dosage ; Anti-Infective Agents/pharmacology ; Anti-Inflammatory Agents/administration & dosage ; Anti-Inflammatory Agents/pharmacology ; Antifungal Agents/administration & dosage ; Antifungal Agents/blood ; Antifungal Agents/pharmacokinetics ; Atovaquone ; Dexamethasone/administration & dosage ; Dexamethasone/pharmacology ; Drug Therapy, Combination ; Lung/chemistry ; Lung/microbiology ; Male ; Naphthoquinones/administration & dosage ; Naphthoquinones/blood ; Naphthoquinones/pharmacokinetics ; Pneumonia, Pneumocystis/drug therapy ; Pneumonia, Pneumocystis/prevention & control ; Pulmonary Surfactants/administration & dosage ; Pulmonary Surfactants/chemical synthesis ; Pulmonary Surfactants/pharmacokinetics ; Rats ; Rats, Sprague-Dawley ; Trimethoprim, Sulfamethoxazole Drug Combination/administration & dosage ; Trimethoprim, Sulfamethoxazole Drug Combination/pharmacology
    Chemical Substances Anti-Infective Agents ; Anti-Inflammatory Agents ; Antifungal Agents ; Naphthoquinones ; Pulmonary Surfactants ; Dexamethasone (7S5I7G3JQL) ; Trimethoprim, Sulfamethoxazole Drug Combination (8064-90-2) ; Atovaquone (Y883P1Z2LT)
    Language English
    Publishing date 1998-04
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 3019-3
    ISSN 1537-6613 ; 0022-1899
    ISSN (online) 1537-6613
    ISSN 0022-1899
    DOI 10.1086/515252
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  8. Article: Diaphragmatic activity is a determinant of postnatal lung growth.

    Mansell, A L / Rojas, J V / Sillos, E M / Stolar, C J / Collins, M H / Rozovski, S J

    Journal of applied physiology (Bethesda, Md. : 1985)

    1986  Volume 61, Issue 3, Page(s) 1098–1103

    Abstract: To test the hypothesis that activity of respiratory muscles determines regional growth of lung parenchyma, we studied the effects of unilateral diaphragmatic paralysis on contralateral/ipsilateral lung growth in cats and piglets. Five 10- to 12-wk-old ... ...

    Abstract To test the hypothesis that activity of respiratory muscles determines regional growth of lung parenchyma, we studied the effects of unilateral diaphragmatic paralysis on contralateral/ipsilateral lung growth in cats and piglets. Five 10- to 12-wk-old cats and five 8-wk-old piglets underwent unilateral diaphragmatic paralysis by thoracic and cervical phrenectomy, respectively. Five to seven weeks after surgery, when the cats were killed for studies of lung growth, gain in body weight was the same as in five sham-operated controls. At this time, mean pleural pressure ipsilateral to the paralyzed hemidiaphragm was the same as contralateral mean pleural pressure during tidal breathing, and values did not differ from controls. However overall functional residual capacity was lower in the phrenectomized cats (35 +/- 4 ml) than in the controls (55 +/- 11 ml, P less than 0.01). Growth of contralateral lungs relative to ipsilateral lungs was greater in the phrenectomized cats than in the controls, as shown by ratios of contralateral/ipsilateral wet lung weight (1.44 vs. 1.34, P less than 0.01), maximum inflation volume (1.53 vs. 1.33, P less than 0.05), and total protein content (1.45 vs. 1.26, P less than 0.05). Ratios of total protein to DNA and RNA to DNA were unchanged. One week after surgery in the piglets, the ratio of contralateral/ipsilateral wet lung weight was increased (1.61 vs. 1.29, P less than 0.01) and total weight of both lungs was reduced. We conclude that regional growth of lung parenchyma by cell proliferation depends in part on regional distribution of respiratory muscle activity.
    MeSH term(s) Animals ; Body Weight ; Cats ; Diaphragm/physiology ; Functional Residual Capacity ; Lung/anatomy & histology ; Lung/growth & development ; Lung/physiology ; Lung Compliance ; Organ Size ; Paralysis/pathology ; Paralysis/physiopathology ; Pressure ; Swine ; Tidal Volume
    Language English
    Publishing date 1986-09
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 219139-8
    ISSN 1522-1601 ; 8750-7587 ; 0021-8987 ; 0161-7567
    ISSN (online) 1522-1601
    ISSN 8750-7587 ; 0021-8987 ; 0161-7567
    Database MEDical Literature Analysis and Retrieval System OnLINE

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