Kucukakkas, Okan, Teoman Aydin, and Mehmet Ali Gultekin. 2021. “Ultrasonographic Evaluation of Gastrointestinal System Involvement in Chronic Inflammatory Rheumatic Diseases”. Annals of Medical Research 27 (6):1776-85. http://annalsmedres.org/index.php/aomr/article/view/800.