Asif, Aiman, Kashmala Sarfraz, Maryam Paracha, and Faiza Saleem. 2017. “TO ASSESS THE PREVALENCE & FACTORS ASSOCIATED WITH SHISHA SMOKING IN MEDICAL STUDENTS”. Journal of Medical Sciences 25 (2):268-72. https://jmedsci.com/index.php/Jmedsci/article/view/64.