Ghani, Rehman, and Ghulam Nabi. 1989. “MAXILLARY SINUSITIS AS A CAUSE OF SECRETORY OTITIS MEDIA IN CHILDREN IN HAZARA DIVISION”. Journal of Ayub Medical College Abbottabad 2 (2’3):24-25. https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/4660.