Khan HS, Sheikh NS, Ayub MM, Tariq M, Zahid S, Hafeez F. SELF-REPORTED EXPOSURE TO SECOND-HAND TOBACCO SMOKE AND LUNG FUNCTION IN UNDERGRADUATE MALE MEDICAL STUDENTS IN PAKISTAN. Pak J Phsyiol [Internet]. 2021 Sep. 30 [cited 2024 Apr. 27];17(3):32-5. Available from: https://pjp.pps.org.pk/index.php/PJP/article/view/1297