Chapter 28 Osteoporosis Presentation: 2005 谢瑞满 Rui-man xie,Ph.D,MD Professor of Neurology Gerontology ZhongShan Hospital, Fudan University rmxie@zshospital.netxieruiman@yahoo.comChapter 28 Osteoporosis Presentation: 2005 谢瑞满 Rui-man Xie，Ph.D., M.D. Professor of Neurology & Gerontology ZhongShan Hospital, Fudan University rmxie@zshospital.net, xieruiman@yahoo.com