title: Vitamin D deficiency in critically ill patients.
authors.forename: Paul
authors.initials: P
authors.lastname: Lee
authors.forename: John A
authors.initials: JA
authors.lastname: Eisman
authors.forename: Jacqueline R
authors.initials: JR
authors.lastname: Center
mesh_terms: D016638:Critical Illness; D006801:Humans; D007362:Intensive Care Units; D011446:Prospective Studies; D014807:Vitamin D / Q000031:analogs & derivatives / Q000097:blood; D014808:Vitamin D Deficiency / Q000453:epidemiology*
chemical_list: D014807:Vitamin D; C104450:25-hydroxyvitamin D