TY - JOUR AU - Longstreth, G F; Longstreth, K J; Yao, J F TI - Esophageal food impaction: epidemiology and therapy. A retrospective, observational study JO - Gastrointest Endosc VL - 53 PY - 2001 DO - 10.1067/mge.2001.112709 SP - 193 EP - 198 ER -