Ahmad Iqbal, Mian Muhammad, Mian Muhammad Ahsan Iqbal, Muhammad Furqan Ashraf, Zaid Mehmood, and Usman Ali. “Transition from Smoking Drugs to Injectable Drugs: Causes and Consequences”. Pakistan Journal of Nutrition 14, no. 8 (July 15, 2015): 535–539. Accessed August 25, 2025. https://pjnonline.org/pjn/article/view/2179.