Glasgow Royal Infirmary;
Glasgow G4 0ET;
United Kingdom;
Forth Valley Royal Hospital;
Larbert FK5 4WR;
United Kingdom;
Raigmore Hospital;
Inverness IV2 3UJ;
United Kingdom;
Hospital Vega Baja;
Orihuela 03314;
Spain;
Endoscopic; ultrasound; Oesophago-gastric; cancer; staging; Oesophageal; cancer; Positron; emission; tomography-computed; tomography; Mediastinal; nodes;