Positron emission tomography with F-18-fluorodeoxyglucose in a combined staging strategy of esophageal cancer prevents unnecessary surgical explorations - van Westreenen,H.L.; Heeren,P.A.; van Dullemen,H.M.; van der Jagt,E.J.; Jager,P.L.; Groen,H.; Plukker,J.T. (J Gastrointest Surg, 2005)