title: Authors' reply.
authors.forename: Sadaf G
authors.initials: SG
authors.lastname: Sepanlou
authors.forename: Reza
authors.initials: R
authors.lastname: Majdzadeh
mesh_terms: D035843:Biomedical Research / Q000458:organization & administration*; D003906:Developing Countries; D004938:Esophageal Neoplasms; D006801:Humans; D013274:Stomach Neoplasms