Widijanti, A., Sulistiandari, S., Hariyanto, T., & Triliana, R. (2010). Result Comparison of Fecal Occult Blood Test between FOBT Hb and FOBT Hb tambah Tranferrin in Detecting Upper Gastrointestinal Tract Bleeding. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy, 11(1), 2–6. https://doi.org/10.24871/11120102-6