1. Parkin DM, Muir CS, Whelan SL, et al. Cancer Incidence in Five Continents, vol. 6, , No. 120. Lyon, France: IARC Scientific Publication, 1992.
2. The Leukemias: Epidemiologic Aspects;Linet,1985
3. Japanese Cancer Association. Gann Monograph on Cancer Research No. 44, In: Tajima K, Sonoda S, editors. Ethno-Epidemiology of Cancer. Boca Raton, FL: CRC Press and Tokyo: Japan Scientific Societies Press, 1996.
4. Incidence of leukemia in Singapore, and rarity of chronic lymphocytic leukaemia in Chinese;Wells;Br. Med. J.,1960
5. Relative frequency and mortality rate of various types of leukemia in Japan;Nishiyama;GANN,1969