Yıldıran SONGÜR, Nejla SONGÜR, Himmet KARACA, Ayşe ÖZSÖZ, and Sadun KOŞAY. 2020. “Changes in Arterial Blood Gases During Endoscopy in Patients With Chronic Obstructive Lung Disease”. Turkish Journal of Gastroenterology 6 (1):60-65. https://turkjgastroenterol.avesjournals.com/index.php/tjg/article/view/906.