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Hemoglobin Concentration in Early Pregnancy and Severe Neonatal Morbidity and Mortality : A Population-Based Cohort Study.

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Title: Hemoglobin Concentration in Early Pregnancy and Severe Neonatal Morbidity and Mortality : A Population-Based Cohort Study.
Authors: Shams I; Department of Hematology, University of Toronto, Toronto, Ontario, Canada (I.S.)., Tang GH; Hematology-Oncology Clinical Research Group, St. Michael's Hospital, Toronto, Ontario, Canada (G.H.T.)., Wang X; ICES, Toronto, Ontario, Canada (X.W.)., Walker M; Department of Obstetrics and Gynecology, University of Ottawa; Department of Obstetrics, Gynecology and Newborn Care, The Ottawa Hospital; Ottawa Hospital Research Institute; BORN; and Obstetrics and Gynecology, Champlain Maternal Newborn Regional Program, Ottawa, Ontario, Canada (M.W.)., Baxter NN; ICES and Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada; and Faculty of Medicine and Health, University of Sydney, Sydney, Australia (N.N.B.)., Gomes T; ICES and Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada (T.G.)., Ray JG; ICES; Li Ka Shing Knowledge Institute and Department of Obstetrics and Gynecology, St. Michael's Hospital; and Department of Medicine, University of Toronto, Toronto, Ontario, Canada (J.G.R.)., Sholzberg M; Department of Hematology, University of Toronto; Hematology-Oncology Clinical Research Group, Li Ka Shing Knowledge Institute, and Coagulation Laboratory, Department of Laboratory Medicine and Pathobiology, St. Michael's Hospital, Toronto, Ontario, Canada (M.S.).
Source: Annals of internal medicine [Ann Intern Med] 2026 Apr; Vol. 179 (4), pp. 506-514. Date of Electronic Publication: 2026 Feb 03.
Publication Type: Journal Article
Journal Info: Publisher: American College of Physicians--American Society of Internal Medicine Country of Publication: United States NLM ID: 0372351 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1539-3704 (Electronic) Linking ISSN: 00034819 NLM ISO Abbreviation: Ann Intern Med Subsets: MEDLINE
Database: MEDLINE Ultimate
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  Data: Hemoglobin Concentration in Early Pregnancy and Severe Neonatal Morbidity and Mortality : A Population-Based Cohort Study.
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  Data: <searchLink fieldCode="AU" term="%22Shams+I%22">Shams I</searchLink>; Department of Hematology, University of Toronto, Toronto, Ontario, Canada (I.S.).<br /><searchLink fieldCode="AU" term="%22Tang+GH%22">Tang GH</searchLink>; Hematology-Oncology Clinical Research Group, St. Michael's Hospital, Toronto, Ontario, Canada (G.H.T.).<br /><searchLink fieldCode="AU" term="%22Wang+X%22">Wang X</searchLink>; ICES, Toronto, Ontario, Canada (X.W.).<br /><searchLink fieldCode="AU" term="%22Walker+M%22">Walker M</searchLink>; Department of Obstetrics and Gynecology, University of Ottawa; Department of Obstetrics, Gynecology and Newborn Care, The Ottawa Hospital; Ottawa Hospital Research Institute; BORN; and Obstetrics and Gynecology, Champlain Maternal Newborn Regional Program, Ottawa, Ontario, Canada (M.W.).<br /><searchLink fieldCode="AU" term="%22Baxter+NN%22">Baxter NN</searchLink>; ICES and Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada; and Faculty of Medicine and Health, University of Sydney, Sydney, Australia (N.N.B.).<br /><searchLink fieldCode="AU" term="%22Gomes+T%22">Gomes T</searchLink>; ICES and Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada (T.G.).<br /><searchLink fieldCode="AU" term="%22Ray+JG%22">Ray JG</searchLink>; ICES; Li Ka Shing Knowledge Institute and Department of Obstetrics and Gynecology, St. Michael's Hospital; and Department of Medicine, University of Toronto, Toronto, Ontario, Canada (J.G.R.).<br /><searchLink fieldCode="AU" term="%22Sholzberg+M%22">Sholzberg M</searchLink>; Department of Hematology, University of Toronto; Hematology-Oncology Clinical Research Group, Li Ka Shing Knowledge Institute, and Coagulation Laboratory, Department of Laboratory Medicine and Pathobiology, St. Michael's Hospital, Toronto, Ontario, Canada (M.S.).
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  Data: <searchLink fieldCode="JN" term="%220372351%22">Annals of internal medicine</searchLink> [Ann Intern Med] 2026 Apr; Vol. 179 (4), pp. 506-514. <i>Date of Electronic Publication: </i>2026 Feb 03.
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  Data: <i>Publisher: </i><searchLink fieldCode="PB" term="%22American+College+of+Physicians--American+Society+of+Internal+Medicine%22">American College of Physicians--American Society of Internal Medicine </searchLink><i>Country of Publication: </i>United States <i>NLM ID: </i>0372351 <i>Publication Model: </i>Print-Electronic <i>Cited Medium: </i>Internet <i>ISSN: </i>1539-3704 (Electronic) <i>Linking ISSN: </i><searchLink fieldCode="IS" term="%2200034819%22">00034819 </searchLink><i>NLM ISO Abbreviation: </i>Ann Intern Med <i>Subsets: </i>MEDLINE
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        Value: 10.7326/ANNALS-25-02586
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        Text: English
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        StartPage: 506
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      – TitleFull: Hemoglobin Concentration in Early Pregnancy and Severe Neonatal Morbidity and Mortality : A Population-Based Cohort Study.
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              Text: 2026 Apr
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              Y: 2026
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