Correction: Sleep quality and associated factors among people who inject drugs in Iran: a nationwide survey using respondent-driven sampling

Affiliations

• ¹ Department of Epidemiology, School of Health, Arak University of Medical Sciences, Arak, Iran.
• ² Occupational Sleep Research Center, Baharloo Hospital, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran.
• ³ HIV/STI Surveillance Research Center, and WHO Collaborating Center for HIV Surveillance, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran.
• ⁴ Students' Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran.
• ⁵ Occupational Sleep Research Center, Baharloo Hospital, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran. Fatemeh.hadavand70@gmail.com.
• ⁶ Non-Communicable Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran. s-akbarpour@sina.tums.ac.ir.
• ⁷ Sleep Breathing Disorders Research Center (SBDRC), Tehran University of Medical Sciences, Tehran, Iran. s-akbarpour@sina.tums.ac.ir.