Management of Malignant Strictures of the Cervical Esophagus with a Newly-Designed Self-Expanding Metal Stent - Shim, C S; Jung, I S; Bhandari, S; Ryu, C B; Hong, S J; Kim, J O; Cho, J Y; Lee, J S; Lee, M S; Kim, B S (Endoscopy, 2004)