1. Holbrook TL, Grazier K, Kelsey JL, Stauffer RN (1984) The frequency of occurrence, impact, and cost of selected musculoskeletal conditions in the United States. In: American Academy of Orthopaedic Surgeons
2. Phillips S, Fox N, Jacobs J, Wright W (1988) The direct medical costs of osteoporosis for American women aged 45 and older. Bone 9:271?279
3. Melton LJ III (1988) Epidemiology of fractures. In: Riggs BL, Melton III LJ (eds) Osteoporosis: etiology, diagnosis, and management, Raven Press, New York, pp 133?154
4. Cummings SR, Kelsey JL, Nevitt MC, O'Dowd KJ (1985) Epidemiology of osteoporosis and osteoporotic fractures. Epidemiol Rev 7:178?208
5. Cummings SR (1987) Epidemiology of hip fractures. In: Jensen J, Riis B, Christiansen C (eds) Osteoporosis. Proc Intl Symp Osteop Norhaven A/S, Viborg Denmark, pp 40?43