Wiig, Johan N., Rune Lilleng, Nadir Paksoy, Aasmund Berner, Saiyinthie Yogesan, and Karl-Erik Giercksky. “Ki-67 Index in Fine Needle Aspiration Cytology Specimens from Primary and Recurrent Rectal Cancer”. Acta Oncologica 35, no. Supp 8 (January 1, 1996): 119–121. Accessed October 7, 2024. https://medicaljournalssweden.se/actaoncologica/article/view/28490.