Ayub M, Daud M, Badar A, Khan FA, Waqar N. EFFECT OF ALTITUDE ON SPIROMETRIC VALUES. J Ayub Med Coll Abbottabad [Internet]. 1990 Jul. 12 [cited 2025 Mar. 13];3(2):5-9. Available from: https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/4676