title: Comment on Chel et al.: efficacy of different doses and time intervals of oral vitamin D supplementation with or without calcium in elderly nursing home residents.
authors.forename: R
authors.initials: R
authors.lastname: Vieth
mesh_terms: D000284:Administration, Oral; D000368:Aged; D000369:Aged, 80 and over; D050071:Bone Density Conservation Agents / Q000008:administration & dosage*; D004334:Drug Administration Schedule; D005260:Female; D006801:Humans; D008297:Male; D010022:Osteopetrosis / Q000517:prevention & control*; D014807:Vitamin D / Q000008:administration & dosage*; D014808:Vitamin D Deficiency / Q000517:prevention & control*
chemical_list: D050071:Bone Density Conservation Agents; D014807:Vitamin D