1. Census of population 2000;Leow,2001
2. Singapore Department of Statistics. Statistics Singapore: population (mid-year estimates). Available from: URL: http://www.singstat.gov.sg/stats/themes/people/hist/popn.html. Accessed October 27, 2008.
3. National Center for Health Statistics, United States. Leading causes of death. Available from: URL: http://www.cdc.gov/nchs/FASTATS/lcod.htm. Accessed November 10, 2008.
4. Singapore Ministry of Health. Health facts Singapore: Principal causes of death. Available from: URL: http://www.moh.gov.sg/mohcorp/statistics.aspx?id=5526. Accessed October 20, 2008.
5. Trends in cancer incidence in Singapore 1968-2002;Seow,2004