1. Population Division, Department of Economic and Social Affairs (1998) World population 1995–2050. (The 1998 Revision) Europe, America, and Australasia (excluding Melanesia). United Nations, New York
2. World Development Indicators (2003) Size of the economy. The World Bank Group, Washington ( http://www.worldbank.org )
3. Morales-Torres J, Gutiérrez-Ureña S (2004) The burden of osteoporosis in Latin America. Osteoporos Int 15:625—632
4. al-Nuaim AR, Kremli M, al-Nuaim M, Sandkgi S (1995) Incidence of proximal femur fracture in an urbanized community in Saudi Arabia. Calcif Tissue Int 56:536–538
5. Baddoura R (2001) Incidence of hip fractures in the Lebanese population. East Mediterr Health J 7:725–729