Sidhu, Nittu, Parshotam Dass Garg, and Manjit Singh. “Psychiatric Comorbidity Among Non-Injecting Opioid Users”. International Journal of Innovative Research in Medical Science 3, no. 11 (November 16, 2018): 2307 to 2310. Accessed May 18, 2024. https://ijirms.in/index.php/ijirms/article/view/475.