Шекера, О. Г., П. М. Яблонський, and Д. В. Мельник. “Determination of Frequency Dispensary Examinations of School-Age Children With Peptic Ulcer Disease of the Duodenum With the Help of a Formalized Model”. Family medicine, no. 2(70) (May 18, 2017): 12–16. Accessed December 21, 2024. https://family-medicine.com.ua/2412-8708/article/view/114692.