Ece Esin, Ferah Yıldız, Şahin Laçin, Yusuf Karakaş, Melis Gültekin, and Şuayib Yalçın. 2019. “Real World Survival Data of a Rare Malignancy: Anal Cancer Results in HIV Negative Patients from Turkey”. Turkish Journal of Gastroenterology 29 (4):411-18. https://tjg.avesjournals.com/index.php/tjg/article/view/3561.