Imran, Nazish, Imran Ijaz Haider, Muhammad Riaz Bhatti, Atif Sohail, and Mohsan Zafar. “Prevalence of Psychoactive Drug Use Among Medical Students in Lahore”. Annals of King Edward Medical University 17, no. 4 (November 9, 2012): 338. Accessed May 6, 2024. https://www.annalskemu.org/journal/index.php/annals/article/view/357.