Shafiq, Mamoona, Sikandar Ali Sheikh, and Syed Hafeezul Hassan. “COMBINED ORAL CONTRACEPTIVE PILLS IMPROVE LUNG FUNCTION VARIABLES”. Pakistan Journal of Physiology 8, no. 1 (May 28, 2018): 52–56. Accessed December 5, 2024. https://pjp.pps.org.pk/index.php/PJP/article/view/774.