Preface.
Lems
Willem F
WF
Department of Rheumatology, VU University medical centre, 3A 64, Postbox 7057, 1007 MB Amsterdam, the Netherlands.
Saag
Kenneth G
KG
D006801:Humans; D010024:Osteoporosis / Q000628:therapy*; D012219:Rheumatology / Q000639:trends*