title: In memoriam: Sergio Ragi-Eis, MD.
authors.affiliation: Oregon Osteoporosis Center, 5050 NE Hoyt Street Suite 626, Portland, OR, 97213, USA, mmcclung@orost.com.
authors.forename: Michael R
authors.initials: MR
authors.lastname: McClung
mesh_terms: D001938:Brazil; D003720:Densitometry / Q000379:methods; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D009985:Orthopedics / Q000193:education / Q000266:history*; D010024:Osteoporosis; D012955:Societies, Medical / Q000266:history / Q000458:organization & administration