title: Severe vitamin D deficiency: a prerequisite for COPD responsiveness to vitamin D supplementation?
authors.forename: Diane R
authors.initials: DR
authors.lastname: Gold
authors.forename: JoAnn E
authors.initials: JE
authors.lastname: Manson
mesh_terms: D019587:Dietary Supplements; D005260:Female; D006801:Humans; D008297:Male; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy*; D014807:Vitamin D / Q000008:administration & dosage*
chemical_list: D014807:Vitamin D