Putri, Annisa Zahara, et al. “Relationship Between Age, Coffee Consumption and Smoking With The Incidence of Gastro Esophageal Reflex Disease (GERD)”. Jurnal Biologi Tropis, vol. 25, no. 1, Jan. 2025, pp. 26-34, doi:10.29303/jbt.v25i1.8324.