title: Calcium and vitamin D in osteoporosis: chairman's introduction to proceedings.
authors.affiliation: Musculoskeletal Unit, Freeman Hospital, University of Newcastle upon Tyne, Newcastle upon Tyne, NE7 7DN, UK. rmfrancis@compuserve.com
authors.forename: R M
authors.initials: RM
authors.lastname: Francis
mesh_terms: D002118:Calcium / Q000378:metabolism / Q000502:physiology*; D006801:Humans; D010024:Osteoporosis / Q000378:metabolism / Q000517:prevention & control*; D014807:Vitamin D / Q000378:metabolism / Q000502:physiology*
chemical_list: D014807:Vitamin D; D002118:Calcium