Human papillomavirus infections in non-melanoma skin cancers from renal transplant recipients and nonimmunosuppressed patients. - Shamanin,V.; zur Hausen,H.; Lavergne,D.; Proby,C.; Leigh,I.M.; Neumann,C.; Hamm,H.; Goos,M.; Haustein,U-F.; Jung,E.G.; Plewig,G.; Wolff,H.; et al. (J Natl Cancer Inst, 1996)