Self-Expanding Coil Stent with a Long Delivery System for Palliation of Unresectable Malignant Gastric Outlet Obstruction: A Prospective Study - Kim, J. H.; Yoo, B. M.; Lee, K. J.; Hahm, K. B.; Cho, S. W.; Park, J. J.; Kim, S. S.; Park, H. C.; Kim, J. H. (Endoscopy, 2001)