title: Low serum 1,25-dihydroxyvitamin D level and risk of respiratory infections in institutionalized older people.
authors.forename: Takaaki
authors.initials: T
authors.lastname: Asamura
authors.forename: Takashi
authors.initials: T
authors.lastname: Ohrui
authors.forename: Katsutoshi
authors.initials: K
authors.lastname: Nakayama
authors.forename: Mei
authors.initials: M
authors.lastname: He
authors.forename: Miyako
authors.initials: M
authors.lastname: Yamasaki
authors.forename: Takae
authors.initials: T
authors.lastname: Ebihara
authors.forename: Satoru
authors.initials: S
authors.lastname: Ebihara
authors.forename: Katsutoshi
authors.initials: K
authors.lastname: Furukawa
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Arai
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D016330:Frail Elderly; D006801:Humans; D007155:Immunologic Factors / Q000097:blood; D007326:Institutionalization; D007564:Japan; D008297:Male; D011014:Pneumonia / Q000453:epidemiology / Q000276:immunology / Q000517:prevention & control; D012307:Risk Factors; D014374:Tuberculin Test; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000097:blood; D014808:Vitamin D Deficiency
chemical_list: D007155:Immunologic Factors; D014807:Vitamin D; C097949:1,25-dihydroxyvitamin D