Socio-economic status and oesophageal cancer: results from a population-based case-control study in a high-risk area

Farhad Islami, Farin Kamangar, Dariush Nasrollahzadeh, Karim Aghcheli, Masoud Sotoudeh, Behnoush Abedi-Ardekani, Shahin Merat, Siavosh Nasseri-Moghaddam, Shahryar Semnani, Alireza Sepehr, Jon Wakefield, Henrik Moller, Christian C. Abnet, Sanford M. Dawsey, Paolo Boffetta, Reza Malekzadeh