Sensitivity of self-reported opioid use in case-control studies: Healthy individuals versus hospitalized patients

• Hamideh Rashidian,

  Affiliation Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran

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• Maryam Hadji,

  Affiliation Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Sciences, Tehran, Iran

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• Maryam Marzban,

  Affiliation Student’ Research Center Committee, Shiraz University of Medical Science, Shiraz, Iran

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• Mahin Gholipour,

  Affiliation Golestan Research Center of Gastroenterology and Hepatology, Golestan University of Medical Sciences, Gorgan, Iran

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• Afarin Rahimi-Movaghar,

  Affiliation Iranian National Center for Addiction Studies (INCAS), Tehran University of Medical Sciences, Tehran, Iran

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• Farin Kamangar,

  Affiliation Department of Public Health Analysis, School of Community Health and Policy, Morgan State University, Baltimore, Maryland, United States of America

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• Reza Malekzadeh,

  Affiliation Digestive Oncology Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran

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• Elisabete Weiderpass,

  Affiliations Department of Research, Cancer Registry of Norway, Institute of Population-Based Cancer Research, Oslo, Norway, Department of Community Medicine, Faculty of Health Sciences, University of Tromsø, The Arctic University of Norway, Tromsø, Norway, Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden, Genetic Epidemiology Group, Folkhälsan Research Center, Helsinki, Finland

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• Abbas Rezaianzadeh,

  Affiliation Colorectal Research Center, Shiraz University of Medical Sciences, Shiraz, Iran

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• Abdolvahab Moradi,

  Affiliation Golestan Research Center of Gastroenterology and Hepatology, Golestan University of Medical Sciences, Gorgan, Iran

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• Nima Babhadi-Ashar,

  Affiliation Iranian National Center for Addiction Studies (INCAS), Tehran University of Medical Sciences, Tehran, Iran

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• Reza Ghiasvand,

  Affiliation Oslo Centre for Biostatistics and Epidemiology, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway

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• Hossein Khavari-Daneshvar,

  Affiliation Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Sciences, Tehran, Iran

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• Ali Akbar Haghdoost,

  Affiliation Regional Knowledge Hub, and WHO Collaborating Centre for HIV Surveillance, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran

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• Kazem Zendehdel

  * E-mail: kzendeh@tums.ac.ir

  Affiliations Cancer Research Center, Cancer Institute of Iran, Tehran University of Medical Sciences, Tehran, Iran, Cancer Biology Research Center, Cancer Institute of Iran, Tehran University of Medical Sciences, Tehran, Iran

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