1. Health and Vital Statistics: 1982;Department of Health, Executive Yuan, Taiwan, R.O.C.,1983
2. Bureau of Health Promotion, Department of Health, Taiwan, R.O.C. Cancer Registry Annual Report, 1995-2002. Available at: http://crs.cph.ntu.edu.tw/crs_c/annual.html 2006.
3. Smoking and drinking in relation to oral and pharyngeal cancer;Blot;Cancer Res,1988
4. Betel quid chewing, cigarette smoking and alcohol consumption related to oral cancer in Taiwan;Ko;J Oral Pathol Med,1995
5. Epidemiologic Analysis with a Programmable Calculator;Rothman,1979