Human papillomavirus infection in women with and without cervical cancer in Karachi, Pakistan.
Raza SA, Franceschi S, Pallardy S, Malik FR, Avan BI, Zafar A, Ali SH, Pervez S, Serajuddaula S, Snijders PJ, et al. Br J Cancer. 2010 May 25; 102(11):1657-60. Epub 2010 Apr 20.