Tehran University of Medical Sciences Journal of Sleep Sciences 2476-2938 6 3-4 2022 10 16 The Bilateral Effects of Sleep-Related Breathing Disorders and Opioid Agonist Use: A Vicious Cycle in Methadone Maintenance Clinics 101 102 Lahya Afshari Saleh Division of Sleep Medicine, Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, Iran Seyed Kaveh Hojjat Division of Sleep Medicine, Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, Iran Mahnaz Amini Division of Sleep Medicine, Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, Iran hadi Asadpour Division of Sleep Medicine, Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, Iran 2021 07 26 2021 12 19 No Abstract   https://jss.tums.ac.ir/index.php/jss/article/view/210