VERA CRUZ, Veronica T.. The Effectiveness of 3% Citric Acid versus Sodium Bicarbonate (Baking Soda) Mouthwash for the Prevention of Radiation-Induced Xerostomia Among Patients Receiving Conventional Radiation Therapy for Head and Neck Malignancies. Philippine Radiation Oncology Society, [S.l.], aug. 2018. Available at: <https://research.pros.org.ph/index.php/pros/article/view/24>. Date accessed: 22 oct. 2020.