1. Beech H. The price of gold. Time Asia Magazine 2006, Thursday, December 14, p. 1–5.
2. The epidemiologic approach to sports injuries;Caine,1996
3. Epidemiology: basis for disease prevention and health promotion;Duncan,1988
4. Clinical epidemiology—the essentials;Fletcher,1982
5. Issues in estimating risks and rates in sports injury research;Knowles;J Athl Train,2006