Effect of oral alendronate on bone mineral density and the incidence of fractures in postmenopausal osteoporosis - Liberman, U A; Weiss, S R; Bröll, J; Minne, H W; Quan, H; Bell, N H; Rodriguez-Portales, J; Downs, R W, Jr; Dequeker, J; Favus, M (N Eng J Med, 1995)