Mardhiyah, Radhiyatam, Dadang Makmun, Ari Fahrial Syam, and Siti Setiati. 2017. “The Effects of Ramadhan Fasting on Clinical Symptoms in Patients With Gastroesophageal Reflux Disease”. Acta Medica Indonesiana 48 (3):169-74. http://www.actamedindones.org/index.php/ijim/article/view/193.