RT Journal Article SR Electronic T1 Risk factors associated with esophageal cancer in North of Iran JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 1141 OP 1143 VO 28 IS 7 A1 Moradi, Abdolvahab A1 Kalavi, Khodaberdi A1 Qujeq, Durdi A1 Ghaemi, Ezzat-Ollah A1 Marjani, Abdoljalal A1 Ghourchaei, Araz YR 2007 UL http://smj.org.sa/content/28/7/1141.abstract AB