Najafi, Baharak, Shahin Shadnia, Hossein Hassanian-Moghaddam, Amir Heydarian, Arezou Mahdavinejad, and Nasim Zamani. “Fentanyl Versus Methadone in Management of Withdrawal Syndrome in Opioid Addicted Patients; A Pilot Clinical Trial ”. Archives of Academic Emergency Medicine 9, no. 1 (September 13, 2021): e62. Accessed January 28, 2022. https://journals.sbmu.ac.ir/aaem/index.php/AAEM/article/view/1384.