About the Authors

Hooman Khademi

Affiliations Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran, International Agency for Research on Cancer, Lyon, France

Amir-Reza Radmard

Affiliation Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran

Fatemeh Malekzadeh

Affiliation Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran

Farin Kamangar

Affiliations Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran, Department of Public Health Analysis, School of Community Health and Policy, Morgan State University, Baltimore, Maryland, United States of America

Siavosh Nasseri-Moghaddam

Affiliation Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran

Mattias Johansson

Affiliation International Agency for Research on Cancer, Lyon, France

Graham Byrnes

Affiliation International Agency for Research on Cancer, Lyon, France

Paul Brennan

Affiliation International Agency for Research on Cancer, Lyon, France

Reza Malekzadeh

malek@ams.ac.ir

Affiliation Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HK ARR RM. Performed the experiments: HK ARR FM SNM RM. Analyzed the data: HK FK MJ GB PB. Wrote the paper: HK ARR FM FK SNM MJ GB PB RM.