Rajabto, Wulyo, Ari Fahrial Syam, and Heru Sundaru. “The Pathogenic Triad of Chronic Cough: Postnasal Drip Syndrome, Asthma, and Gastroesophageal Reflux Disease”. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy 8, no. 1 (January 4, 2007): 20–23. Accessed October 26, 2026. https://ina-jghe.com/index.php/jghe/article/view/187.