Conquering the last frontier: is it necessary?
Lewis
B S
BS
D020776:Endoscopes, Gastrointestinal; D016099:Endoscopy, Gastrointestinal / Q000379:methods / Q000639:trends*; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis; D006801:Humans; D014741:Video Recording / Q000295:instrumentation