title: Vitamin D and COPD: seasonal variation is important.
authors.forename: Sundari N
authors.initials: SN
authors.lastname: Ampikaipakan
authors.forename: David A
authors.initials: DA
authors.lastname: Hughes
authors.forename: Jackie C
authors.initials: JC
authors.lastname: Hughes
authors.forename: Talar
authors.initials: T
authors.lastname: Amen
authors.forename: Graham
authors.initials: G
authors.lastname: Bentham
authors.forename: Andrew M
authors.initials: AM
authors.lastname: Wilson
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D029424:Pulmonary Disease, Chronic Obstructive / Q000209:etiology*; D012621:Seasons; D014807:Vitamin D / Q000097:blood; D014808:Vitamin D Deficiency / Q000150:complications*
chemical_list: D014807:Vitamin D