Prevalence and mortality of cancer among people living with HIV and AIDS patients: a large cohort study in TurkeyOzlem Altuntas Aydin, Alper Gunduz, Fatma Sargin, Bilgül Mete, Hayat Kumbasar Karaosmanoglu, Dilek Yildiz Sevgi, Mucahit Yemisen, Bulent Durdu, Ilyas Dokmetas, Fehmi Tabak, ACTHIV-IST