1. Histograms depicting rates of cancer age-standardized to the world population by site and sex;Whelan,1990
2. Table 17, Cancer registration by age and sex 1990;Hospital Authority;Hospital Authority Statistical Report,1992
3. Cancer of the larynx: current concepts of diagnosis and treatment;Romm;Surg Clin North Am,1986
4. Histological typing of tumours of the upper respiratory tract and ear;Shanmugaratnam,1991