1.
Shamsi AZ, Tasneem S, Haider I, Aslam MR, Sarwar H. Prevalence of nicotine dependence among adults in Karachi, Pakistan. IJEHSR [Internet]. 31Mar.2018 [cited 20Sep.2019];6(1):23-0. Available from: http://aeirc-edu.com/ojs14/index.php/IJEHSR/article/view/179