Siregar, Gontar Alamsyah, Sahat Halim, and Ricky Rivalino Sitepu. 2016. “Dyspepsia and Depression, Anxiety, Stress Scales (DASS) Score”. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy 17 (1):28-31. https://doi.org/10.24871/171201628-31.