Esophagoscopy study:Find:Stdy:Esophagus:Doc:Esophagoscopy
esophagoscopy study:find:stdy:esophagus:doc:esophagoscopy
Esophagoscopy study:Finding:Duration of the study:Esophagus:Document:Esophagoscopy
esophagoscopy study:finding:duration of the study:esophagus:document:esophagoscopy