Is opium a real risk factor for esophageal cancer or just a methodological artifact? Hospital and neighborhood controls in case-control studies.

por Ramin Shakeri, Farin Kamangar, Dariush Nasrollahzadeh, Mehdi Nouraie, Hooman Khademi, Arash Etemadi, Farhad Islami, Hajiamin Marjani, Saman Fahimi, Alireza Sepehr, Atieh Rahmati, Christian C Abnet, Sanford M Dawsey, Paul Brennan, Paolo Boffetta, Reza Malekzadeh, Reza Majdzadeh
Publicado 2012