1. Cooper C, Melton LJ. Epidemiology of osteoporosis. Trends Endocrinol Metab 1992;314:224–229
2. Aaron JE, Gallagher JC, Anderson J, Stasiak L, Longton EB, Nordin BEC, Nicholson M. Frequency of osteomalacia and osteoporosis in fractures of the proximal femur. Lancet 1974;229:233
3. Robbins S, Cotran R, Kumar V. Pathological basis of disease. Philadelphia, Saunders 1984;1327–1329
4. WHO. Assessment of fracture risk and its application to screening for post-menopausal osteoporosis. World Health Organization Technical Report 843. Geneva; 1994
5. Kanis JA, Johnell O, Oden A, Jonsson B, De Laet C, Dawson A. Risk of hip fracture according to the world health organization criteria for osteopenia and osteoporosis. Bone 2000;27:585–590