Harisna, Safyra Putri, Adnan Abdullah, and Elvina Prisilla. 2023. “The Relationship Between the Incidence of Acute Otitis Media in Patients With Upper Respiratory Tract Infections at PKU Muhammadiyah Yogyakarta Hospital”. Ahmad Dahlan Medical Journal 4 (2):201-14. http://journal2.uad.ac.id/index.php/admj/article/view/8746.