id	keyword
ecj-6848	esophageal
ecj-6848	perforation
ecj-6848	esophagus
ecj-6848	body
ecj-6848	diagnosis
ecj-6848	case
ecj-6848	chest
ecj-6848	surg
ecj-6848	management
ecj-6848	treatment
ecj-6848	patients