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  1. Article ; Online: Omenn Syndrome in Two Infants with Different Hypomorphic Variants in Janus Kinase 3.

    Tsilifis, Christo / Spegarova, Jarmila Stremenova / Good, Ross / Griffin, Helen / Engelhardt, Karin R / Graham, Sophie / Hughes, Stephen / Arkwright, Peter D / Hambleton, Sophie / Gennery, Andrew R

    Journal of clinical immunology

    2024  Volume 44, Issue 4, Page(s) 98

    Abstract: Biallelic null or hypomorphic variants in JAK3 cause SCID and less frequently Omenn syndrome. We investigated homozygous hypomorphic JAK3 mutations in two patients, and expression and function of a novel ... ...

    Abstract Biallelic null or hypomorphic variants in JAK3 cause SCID and less frequently Omenn syndrome. We investigated homozygous hypomorphic JAK3 mutations in two patients, and expression and function of a novel JAK3
    MeSH term(s) Humans ; Infant ; Interleukin-15 ; Interleukin-2 ; Interleukin-7 ; Janus Kinase 3/genetics ; Leukocytes, Mononuclear ; Severe Combined Immunodeficiency/diagnosis ; Severe Combined Immunodeficiency/genetics ; Severe Combined Immunodeficiency/therapy
    Chemical Substances Interleukin-15 ; Interleukin-2 ; Interleukin-7 ; Janus Kinase 3 (EC 2.7.10.2) ; JAK3 protein, human (EC 2.7.10.2)
    Language English
    Publishing date 2024-04-10
    Publishing country Netherlands
    Document type Case Reports ; Journal Article
    ZDB-ID 779361-3
    ISSN 1573-2592 ; 0271-9142
    ISSN (online) 1573-2592
    ISSN 0271-9142
    DOI 10.1007/s10875-024-01699-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Congenital nephrotic syndrome in IL7Rα-SCID: A rare feature of maternofetal graft-versus-host disease.

    Tsilifis, Christo / Slatter, Mary / Cordeiro, Ana Isabel / Hambleton, Sophie / Engelhardt, Karin R / Griffin, Helen / Gennery, Andrew R / Neves, João Farela

    The journal of allergy and clinical immunology. In practice

    2021  Volume 9, Issue 11, Page(s) 4151–4153.e1

    MeSH term(s) Graft vs Host Disease/diagnosis ; Humans ; Nephrotic Syndrome/diagnosis
    Language English
    Publishing date 2021-06-18
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2843237-X
    ISSN 2213-2201 ; 2213-2198
    ISSN (online) 2213-2201
    ISSN 2213-2198
    DOI 10.1016/j.jaip.2021.05.040
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: IL-10 in humans: lessons from the gut, IL-10/IL-10 receptor deficiencies, and IL-10 polymorphisms.

    Engelhardt, Karin R / Grimbacher, Bodo

    Current topics in microbiology and immunology

    2014  Volume 380, Page(s) 1–18

    Abstract: Inflammatory bowel disease (IBD) represents a heterogeneous group of gastrointestinal disorders, where commensal gut flora provokes an either (a) insufficient or (b) uncontrolled immune response. This results either in a lack of or in excessive ... ...

    Abstract Inflammatory bowel disease (IBD) represents a heterogeneous group of gastrointestinal disorders, where commensal gut flora provokes an either (a) insufficient or (b) uncontrolled immune response. This results either in a lack of or in excessive inflammation mainly manifesting as Crohn's disease or ulcerative colitis. IBD commonly presents in adolescence and adulthood and often follows a chronic relapsing course. Genetic and/or environmental factors contribute to the failure of gut immune homeostasis. Genome-wide association studies have identified over 160 susceptibility loci associated with IBD, including polymorphisms in interleukin-10 (IL-10). The anti-inflammatory cytokine IL-10 dampens intestinal inflammation and is therefore a good candidate gene for IBD. Polymorphisms in the IL-10 receptor are also associated with ulcerative colitis presenting in early childhood. Moreover, severe infantile enterocolitis resembling Crohn's disease, caused by loss-of-function mutations in IL-10 and IL-10 receptor, is characterised by a very early onset (usually within the first 3 months of life), unresponsiveness to standard treatment including immunosuppressive therapy, and severe perianal disease with abscesses and fistulas. In these patients, inflammation and polymorphic infiltrates are mainly confined to the colon with very little involvement of the small intestine. Ulceration and granulomas, bloody diarrhoea and failure to thrive also occur. Furthermore, patients may suffer from recurrent fever and respiratory infections. Individuals with IL-10 receptor mutations also experience cutaneous folliculitis and arthritis. Hematopoietic stem cell transplantation is currently the only curative therapy.
    MeSH term(s) Animals ; Gastrointestinal Tract/immunology ; Humans ; Inflammatory Bowel Diseases/etiology ; Inflammatory Bowel Diseases/genetics ; Inflammatory Bowel Diseases/therapy ; Interleukin-10/deficiency ; Interleukin-10/genetics ; Interleukin-10/physiology ; Polymorphism, Genetic ; Receptors, Interleukin-10/deficiency ; Receptors, Interleukin-10/genetics ; Receptors, Interleukin-10/physiology
    Chemical Substances Receptors, Interleukin-10 ; Interleukin-10 (130068-27-8)
    Language English
    Publishing date 2014
    Publishing country Germany
    Document type Journal Article ; Review
    ISSN 0070-217X
    ISSN 0070-217X
    DOI 10.1007/978-3-662-43492-5_1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Immunomodulatory leptin receptor

    Haberman, Emma R / Sarker, Gitalee / Arús, Bernardo A / Ziegler, Karin A / Meunier, Sandro / Martínez-Sánchez, Noelia / Freibergerová, Eliška / Yilmaz-Özcan, Sinem / Fernández-González, Iara / Zentai, Chloe / O'Brien, Conan J O / Grainger, David E / Sidarta-Oliveira, Davi / Chakarov, Svetoslav / Raimondi, Andrea / Iannacone, Matteo / Engelhardt, Stefan / López, Miguel / Ginhoux, Florent /
    Domingos, Ana I

    Immunity

    2023  Volume 57, Issue 1, Page(s) 141–152.e5

    Abstract: Adipose tissues (ATs) are innervated by sympathetic nerves, which drive reduction of fat mass via lipolysis and thermogenesis. Here, we report a population of immunomodulatory leptin receptor-positive ( ... ...

    Abstract Adipose tissues (ATs) are innervated by sympathetic nerves, which drive reduction of fat mass via lipolysis and thermogenesis. Here, we report a population of immunomodulatory leptin receptor-positive (LepR
    MeSH term(s) Animals ; Humans ; Mice ; Adipose Tissue, Brown/innervation ; Adipose Tissue, Brown/metabolism ; Body Weight ; Energy Metabolism/physiology ; Interleukin-33/genetics ; Interleukin-33/metabolism ; Leptin ; Obesity/metabolism ; Receptors, Leptin/genetics ; Receptors, Leptin/metabolism ; Thermogenesis/physiology
    Chemical Substances Interleukin-33 ; Leptin ; Receptors, Leptin ; LEPR protein, human ; leptin receptor, mouse
    Language English
    Publishing date 2023-12-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1217235-2
    ISSN 1097-4180 ; 1074-7613
    ISSN (online) 1097-4180
    ISSN 1074-7613
    DOI 10.1016/j.immuni.2023.11.006
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Mendelian traits causing susceptibility to mucocutaneous fungal infections in human subjects.

    Engelhardt, Karin R / Grimbacher, Bodo

    The Journal of allergy and clinical immunology

    2012  Volume 129, Issue 2, Page(s) 294–305; quiz 306–7

    Abstract: Mucocutaneous candidiasis and dermatophyte infections occur either in isolation or alongside other symptoms in patients with various primary immunodeficiency diseases with diverse genetic defects, which result in impaired IL-17 immunity, IL-22 immunity, ... ...

    Abstract Mucocutaneous candidiasis and dermatophyte infections occur either in isolation or alongside other symptoms in patients with various primary immunodeficiency diseases with diverse genetic defects, which result in impaired IL-17 immunity, IL-22 immunity, or both. In patients with chronic mucocutaneous candidiasis, disease-associated polymorphisms in DECTIN1 act on the level of fungal recognition, whereas mutations in caspase recruitment domain-containing protein 9 (CARD9) disturb the subsequent spleen tyrosine kinase 2-CARD9/BCL10/MALT1-driven signaling cascade, impairing nuclear factor κB-mediated maturation of antigen-presenting cells and priming of naive T cells to differentiate into the T(H)17 cell lineage. T(H)17-priming cytokines signal through the transcription factor signal transducer and activator of transcription (STAT) 3, which in turn induces the T(H)17 lineage-determining transcription factor retinoic acid-related orphan receptor γt. Dominant-negative mutations in STAT3 result in reduced numbers of T(H)17 cells, causing localized candidiasis in patients with hyper-IgE syndrome. In patients with chronic mucocutaneous candidiasis, gain-of-function STAT1 mutations shift the cellular response toward T(H)17 cell-inhibiting cytokines. T(H)17 cells secrete IL-17 and IL-22, which are cytokines with potent antifungal properties, including production of antimicrobial peptides and activation and recruitment of neutrophils. Neutrophils mediate microbial killing through phagocytosis, degranulation, and neutrophil extracellular traps. Mutations in IL17F and IL17R in patients with chronic mucocutaneous candidiasis, as well as neutralizing autoantibodies against IL-17 and IL-22 in patients with autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy, directly impair IL-17 and IL-22 immunity.
    MeSH term(s) Animals ; Dermatomycoses/genetics ; Dermatomycoses/immunology ; Genetic Predisposition to Disease ; Humans ; Immunologic Deficiency Syndromes/genetics ; Immunologic Deficiency Syndromes/immunology
    Language English
    Publishing date 2012-02
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 121011-7
    ISSN 1097-6825 ; 1085-8725 ; 0091-6749
    ISSN (online) 1097-6825 ; 1085-8725
    ISSN 0091-6749
    DOI 10.1016/j.jaci.2011.12.966
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Mendelian traits causing susceptibility to mucocutaneous fungal infections in human subjects

    Engelhardt, Karin R / Grimbacher, Bodo

    The Journal of Allergy and Clinical Immunology. 2012 Feb., v. 129, no. 2

    2012  

    Abstract: Mucocutaneous candidiasis and dermatophyte infections occur either in isolation or alongside other symptoms in patients with various primary immunodeficiency diseases with diverse genetic defects, which result in impaired IL-17 immunity, IL-22 immunity, ... ...

    Abstract Mucocutaneous candidiasis and dermatophyte infections occur either in isolation or alongside other symptoms in patients with various primary immunodeficiency diseases with diverse genetic defects, which result in impaired IL-17 immunity, IL-22 immunity, or both. In patients with chronic mucocutaneous candidiasis, disease-associated polymorphisms in DECTIN1 act on the level of fungal recognition, whereas mutations in caspase recruitment domain–containing protein 9 (CARD9) disturb the subsequent spleen tyrosine kinase 2–CARD9/BCL10/MALT1–driven signaling cascade, impairing nuclear factor κB–mediated maturation of antigen-presenting cells and priming of naive T cells to differentiate into the TH17 cell lineage. TH17-priming cytokines signal through the transcription factor signal transducer and activator of transcription (STAT) 3, which in turn induces the TH17 lineage–determining transcription factor retinoic acid–related orphan receptor γt. Dominant-negative mutations in STAT3 result in reduced numbers of TH17 cells, causing localized candidiasis in patients with hyper-IgE syndrome. In patients with chronic mucocutaneous candidiasis, gain-of-function STAT1 mutations shift the cellular response toward TH17 cell–inhibiting cytokines. TH17 cells secrete IL-17 and IL-22, which are cytokines with potent antifungal properties, including production of antimicrobial peptides and activation and recruitment of neutrophils. Neutrophils mediate microbial killing through phagocytosis, degranulation, and neutrophil extracellular traps. Mutations in IL17F and IL17R in patients with chronic mucocutaneous candidiasis, as well as neutralizing autoantibodies against IL-17 and IL-22 in patients with autoimmune polyendocrinopathy–candidiasis–ectodermal dystrophy, directly impair IL-17 and IL-22 immunity.
    Keywords T-lymphocytes ; antifungal properties ; antigen-presenting cells ; antimicrobial peptides ; autoantibodies ; candidiasis ; caspases ; fungi ; genetic disorders ; human diseases ; immunosuppression (physiological) ; interleukin-17 ; mutation ; neutralization ; neutrophils ; non-specific protein-tyrosine kinase ; patients ; phagocytosis ; signal transduction ; transcription factors
    Language English
    Dates of publication 2012-02
    Size p. 294-305.
    Publishing place Mosby, Inc.
    Document type Article
    ZDB-ID 121011-7
    ISSN 1085-8725 ; 1097-6825 ; 0091-6749
    ISSN (online) 1085-8725 ; 1097-6825
    ISSN 0091-6749
    DOI 10.1016/j.jaci.2011.12.966
    Database NAL-Catalogue (AGRICOLA)

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  7. Article ; Online: Expanding the PRAAS spectrum: De novo mutations of immunoproteasome subunit β-type 10 in six infants with SCID-Omenn syndrome.

    van der Made, Caspar I / Kersten, Simone / Chorin, Odelia / Engelhardt, Karin R / Ramakrishnan, Gayatri / Griffin, Helen / Schim van der Loeff, Ina / Venselaar, Hanka / Rothschild, Annick Raas / Segev, Meirav / Schuurs-Hoeijmakers, Janneke H M / Mantere, Tuomo / Essers, Rick / Esteki, Masoud Zamani / Avital, Amir L / Loo, Peh Sun / Simons, Annet / Pfundt, Rolph / Warris, Adilia /
    Seyger, Marieke M / van de Veerdonk, Frank L / Netea, Mihai G / Slatter, Mary A / Flood, Terry / Gennery, Andrew R / Simon, Amos J / Lev, Atar / Frizinsky, Shirley / Barel, Ortal / van der Burg, Mirjam / Somech, Raz / Hambleton, Sophie / Henriet, Stefanie S V / Hoischen, Alexander

    American journal of human genetics

    2024  Volume 111, Issue 4, Page(s) 791–804

    Abstract: Mutations in proteasome β-subunits or their chaperone and regulatory proteins are associated with proteasome-associated autoinflammatory disorders (PRAAS). We studied six unrelated infants with three de novo heterozygous missense variants in PSMB10, ... ...

    Abstract Mutations in proteasome β-subunits or their chaperone and regulatory proteins are associated with proteasome-associated autoinflammatory disorders (PRAAS). We studied six unrelated infants with three de novo heterozygous missense variants in PSMB10, encoding the proteasome β2i-subunit. Individuals presented with T-B-NK± severe combined immunodeficiency (SCID) and clinical features suggestive of Omenn syndrome, including diarrhea, alopecia, and desquamating erythematous rash. Remaining T cells had limited T cell receptor repertoires, a skewed memory phenotype, and an elevated CD4/CD8 ratio. Bone marrow examination indicated severely impaired B cell maturation with limited V(D)J recombination. All infants received an allogeneic stem cell transplant and exhibited a variety of severe inflammatory complications thereafter, with 2 peri-transplant and 2 delayed deaths. The single long-term transplant survivor showed evidence for genetic rescue through revertant mosaicism overlapping the affected PSMB10 locus. The identified variants (c.166G>C [p.Asp56His] and c.601G>A/c.601G>C [p.Gly201Arg]) were predicted in silico to profoundly disrupt 20S immunoproteasome structure through impaired β-ring/β-ring interaction. Our identification of PSMB10 mutations as a cause of SCID-Omenn syndrome reinforces the connection between PRAAS-related diseases and SCID.
    MeSH term(s) Infant ; Humans ; Severe Combined Immunodeficiency/genetics ; Severe Combined Immunodeficiency/metabolism ; Proteasome Endopeptidase Complex/genetics ; Proteasome Endopeptidase Complex/metabolism ; Mutation/genetics ; T-Lymphocytes/metabolism ; Mutation, Missense/genetics
    Chemical Substances Proteasome Endopeptidase Complex (EC 3.4.25.1)
    Language English
    Publishing date 2024-03-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 219384-x
    ISSN 1537-6605 ; 0002-9297
    ISSN (online) 1537-6605
    ISSN 0002-9297
    DOI 10.1016/j.ajhg.2024.02.013
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Defective neutrophil development and specific granule deficiency caused by a homozygous splice-site mutation in SMARCD2.

    Schim van der Loeff, Ina / Sprenkeler, Evelien G G / Tool, Anton T J / Abinun, Mario / Grainger, Angela / Engelhardt, Karin R / van Houdt, Michel / Janssen, Hans / Kuijpers, Taco W / Hambleton, Sophie

    The Journal of allergy and clinical immunology

    2020  Volume 147, Issue 6, Page(s) 2381–2385.e2

    Abstract: Background: SMARCD2 (SWI/SNF-related, matrix-associated, actin-dependent regulator of chromatin, subfamily D, member 2) has recently been shown to have a critical role in granulopoiesis in humans, mice, and zebrafish. Our patient presented with delayed ... ...

    Abstract Background: SMARCD2 (SWI/SNF-related, matrix-associated, actin-dependent regulator of chromatin, subfamily D, member 2) has recently been shown to have a critical role in granulopoiesis in humans, mice, and zebrafish. Our patient presented with delayed cord separation, failure to thrive, and sepsis. Retrospective whole-exome sequencing confirmed a homozygous splice-site mutation in SMARCD2.
    Objective: We sought to provide the second description of human SMARCD2 deficiency and the first functional analysis of human primary SMARCD2-deficient cells.
    Methods: Heparinized venous blood and bone marrow were collected from the patient after obtaining informed consent. Patient leukocytes and CD34
    Results: Circulating neutrophils appeared phenotypically immature, lacking multilobed nuclei, and neutrophil granules lacked lactoferrin but showed normal levels of myeloperoxidase. Neutrophil oxidative burst was preserved in response to phorbol 12-myristate 13-acetate. Patient bone marrow-derived neutrophils and white blood cells showed a severely impaired chemotactic response. Furthermore, white blood cells showed defective in vitro killing of Staphylococcus aureus, consistent with a specific granule deficiency. Finally, patient bone marrow-derived CD34
    Conclusions: This report highlights an important role for SMARCD2 in human myelopoiesis and the curative effect of hematopoietic stem cell transplantation for the hematopoietic features of SMARCD2 deficiency.
    MeSH term(s) Biomarkers ; Cell Differentiation/genetics ; Cell Differentiation/immunology ; Chemotaxis, Leukocyte/genetics ; Chemotaxis, Leukocyte/immunology ; Chromosomal Proteins, Non-Histone/genetics ; Cytotoxicity, Immunologic ; Female ; Genetic Predisposition to Disease ; Homozygote ; Humans ; Immunophenotyping ; Infant, Newborn ; Lactoferrin/deficiency ; Leukocyte Disorders/diagnosis ; Leukocyte Disorders/etiology ; Mutation ; NADPH Oxidases/metabolism ; Neutrophils/metabolism ; Neutrophils/pathology ; Neutrophils/ultrastructure ; Pedigree ; Phenotype ; RNA Splice Sites ; Respiratory Burst/genetics ; Respiratory Burst/immunology
    Chemical Substances Biomarkers ; Chromosomal Proteins, Non-Histone ; RNA Splice Sites ; SMARCD2 protein, human ; NADPH Oxidases (EC 1.6.3.-) ; Lactoferrin (EC 3.4.21.-)
    Language English
    Publishing date 2020-12-03
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 121011-7
    ISSN 1097-6825 ; 1085-8725 ; 0091-6749
    ISSN (online) 1097-6825 ; 1085-8725
    ISSN 0091-6749
    DOI 10.1016/j.jaci.2020.11.025
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Signal transducer and activator of transcription 5B deficiency due to a novel missense mutation in the coiled-coil domain.

    Acres, Meghan J / Gothe, Florian / Grainger, Angela / Skelton, Andrew J / Swan, David J / Willet, Joseph D P / Leech, Suzy / Galcheva, Sonya / Iotova, Violeta / Hambleton, Sophie / Engelhardt, Karin R

    The Journal of allergy and clinical immunology

    2018  Volume 143, Issue 1, Page(s) 413–416.e4

    MeSH term(s) Adolescent ; Humans ; Male ; Mutation, Missense ; Protein Domains ; STAT5 Transcription Factor/deficiency ; STAT5 Transcription Factor/immunology
    Chemical Substances STAT5 Transcription Factor ; STAT5B protein, human
    Language English
    Publishing date 2018-09-08
    Publishing country United States
    Document type Case Reports ; Letter ; Research Support, Non-U.S. Gov't
    ZDB-ID 121011-7
    ISSN 1097-6825 ; 1085-8725 ; 0091-6749
    ISSN (online) 1097-6825 ; 1085-8725
    ISSN 0091-6749
    DOI 10.1016/j.jaci.2018.08.032
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Membrane domains in lymphocytes - from lipid rafts to protein scaffolds.

    Harder, Thomas / Engelhardt, Karin R

    Traffic (Copenhagen, Denmark)

    2004  Volume 5, Issue 4, Page(s) 265–275

    Abstract: Lateral compartmentalization of the plasma membrane into domains is a key feature of immune cell activation and subsequent immune effector functions. Here, we will review the high diversity of membrane domains, ranging from elementary lipid rafts, ... ...

    Abstract Lateral compartmentalization of the plasma membrane into domains is a key feature of immune cell activation and subsequent immune effector functions. Here, we will review the high diversity of membrane domains, ranging from elementary lipid rafts, envisioned as dynamic and small domains (in the tens of nm), to relatively stable microm-scale membrane domains, which form the immunologic synapse of T lymphocytes. We will discuss the relationship between these different types of plasma membrane domains and how raft lipid- and protein-controlled interactions and cell biological processes cooperate to generate functional domains that mediate lymphocyte activity.
    MeSH term(s) Animals ; Carrier Proteins/physiology ; Humans ; Immune System/cytology ; Immune System/immunology ; Leukocyte Common Antigens/physiology ; Lymphocyte Specific Protein Tyrosine Kinase p56(lck)/physiology ; Lymphocytes/physiology ; Membrane Lipids/physiology ; Membrane Microdomains/physiology ; Membrane Proteins/immunology ; Membrane Proteins/physiology ; Models, Biological ; Signal Transduction/immunology ; Signal Transduction/physiology
    Chemical Substances Carrier Proteins ; Membrane Lipids ; Membrane Proteins ; citrate-binding transport protein ; Lymphocyte Specific Protein Tyrosine Kinase p56(lck) (EC 2.7.10.2) ; Leukocyte Common Antigens (EC 3.1.3.48)
    Language English
    Publishing date 2004-04
    Publishing country England
    Document type Clinical Trial ; Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 1483852-7
    ISSN 1600-0854 ; 1398-9219
    ISSN (online) 1600-0854
    ISSN 1398-9219
    DOI 10.1111/j.1600-0854.2003.00163.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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