Ayub, M., Badar, A., Daud, M., Yousaf, M., Khan, F. A., & Waqar, N. (1998). PULMONARY FUNCTION TESTS IN NATHIAGALI NATIVES. Journal of Ayub Medical College Abbottabad, 10(1), 24–26. Retrieved from https://www.jamc.ayubmed.edu.pk/index.php/jamc/article/view/4803