Soriano, Patricia Ann, Erasmo Gonzalo Llanes, Anna Pamela Dela Cruz, and Kevin Michael Mendoza. “Effect of Proton Pump Inhibitors on Reflux Symptom Index (RSI) and Reflux Finding Score (RFS) in Patients With Laryngopharyngeal Reflux: A Systematic Review and Meta-Analysis”. Philippine Journal of Otolaryngology Head and Neck Surgery 37, no. 1 (June 5, 2022): 6. Accessed July 17, 2024.