Bing-Ling ZHANG, and You-Ming LI. “Capsule Endoscopy Examination Identifies Different Leading Causes of Obscure Gastrointestinal Bleeding in Patients of Different Ages”. Turkish Journal of Gastroenterology, vol. 23, no. 3, July 2019, pp. 220-5, https://tjg.avesjournals.com/index.php/tjg/article/view/2631.