Dae Bum Kim, Ik Hyun Jo, Chang-Nyol Paik, Yeon-Ji Kim, and Ji Min Lee. 2022. “Serum Pepsinogen and Gastrin Levels: Reliable Markers to Predict Small Intestinal Bacterial Overgrowth”. Turkish Journal of Gastroenterology 33 (3):213-20. https://turkjgastroenterol.avesjournals.com/index.php/tjg/article/view/4202.