1. Correlates of homosexual behaviour and the incidence of anal cancer;Daling JR. Weiss NS, Klopfenstein LL, Cochran LE. Chow WH. Daifuku R;JAMA,1982
2. lntraepithelial carcinoma of the anus in homosexual men;Croxson, T.; Chabon, A.B.; Rorat, E.; Barash, I.M.;Dis Colon Rectuni,1984
3. Human papillomavirus types 16 and 18 in carcinomas of the penis from Brazil;McCance, D.J.; Kalache, A.; Ashdown, K.;Int J Canicer,1986
4. Proc Nail Acad Sci USA 1983;80:3812-5.
5. Human papillomavirus types 6 and 16 in multifocal intraepithelial neoplasias of the female lower genital tract;PK, McCance D.J.Clarkson; JL, Dyson; PG, Walker; A, Singer;Br J Obsiet GC}naecol,1985