Response to Lankarani.
Digestive Disease Oncology Center, Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran.
Mohammad Masoud
MM
Malekzadeh
1] Digestive Disease Oncology Center, Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran [2] International Agency for Research on Cancer, Lyon, France.
Hooman
H
Khademi
Digestive Disease Oncology Center, Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran.
Reza
R
Malekzadeh
1] Digestive Disease Oncology Center, Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran [2] Department of Public Health Analysis, School of Community Health and Policy, Morgan State University, Baltimore, Maryland, USA.
Farin
F
Kamangar
D004066:Digestive System Diseases / Q000401:mortality*; D055030:Drug Users; D005260:Female; D006801:Humans; D008297:Male; D009892:Opium / Q000009:adverse effects*
D009892:Opium