Vitamin D sufficiency, a serum 25-hydroxyvitamin D at least 30 ng/mL reduced risk for adverse clinical outcomes in patients with COVID-19 infection

• Zhila Maghbooli,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Writing – original draft

  Affiliations Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran, Research Development Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran

  http://orcid.org/0000-0001-8858-6269

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• Mohammad Ali Sahraian ,

  Roles Methodology, Project administration, Writing – review & editing

  * E-mail: mfholick@bu.edu (MFH); msahrai@tums.ac.ir (MAS)

  Affiliation Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran

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• Mehdi Ebrahimi,

  Roles Investigation, Writing – review & editing

  Affiliation Endocrinology Department, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran

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• Marzieh Pazoki,

  Roles Investigation, Writing – review & editing

  Affiliation Department of Infectious Diseases, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran

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• Samira Kafan,

  Roles Investigation, Writing – review & editing

  Affiliation Department of Internal Medicine, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran

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• Hedieh Moradi Tabriz,

  Roles Data curation, Writing – review & editing

  Affiliation Department of Pathology, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran

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• Azar Hadadi,

  Roles Investigation, Writing – review & editing

  Affiliation Department of Internal Medicine, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran

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• Mahnaz Montazeri,

  Roles Investigation, Writing – review & editing

  Affiliation Department of Internal Medicine, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran

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• Mehrad Nasiri,

  Roles Data curation, Writing – review & editing

  Affiliation Research Development Center, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran

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• Arash Shirvani,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Validation, Writing – review & editing

  Affiliation Department of Medicine, Section of Endocrinology, Nutrition, Diabetes and Weight Management, Boston University Medical Center, Boston, Massachusetts, United States of America

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• Michael F. Holick

  Roles Conceptualization, Formal analysis, Methodology, Writing – review & editing

  * E-mail: mfholick@bu.edu (MFH); msahrai@tums.ac.ir (MAS)

  Affiliation Department of Medicine, Section of Endocrinology, Nutrition, Diabetes and Weight Management, Boston University Medical Center, Boston, Massachusetts, United States of America

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