Thamrin, H., K. Ilmiah, and N. W. Tirthaningsih. “Profile of Colorectal Tumor in Gastroentero-Hepatology Center, Department of Internal Medicine, Dr Soetomo Hospital, Surabaya”. Folia Medica Indonesiana, vol. 56, no. 1, Mar. 2020, pp. 15-18, doi:10.20473/fmi.v56i1.24552.