The relative value of the Olympus model GT-5 gastrocamera and Olympus model GT-F gastrocamera fiberscope.
D020699:Gastroscopes; D006801:Humans; D010781:Photography / Q000295:instrumentation*; D013272:Stomach Diseases / Q000175:diagnosis*; D013274:Stomach Neoplasms / Q000175:diagnosis*; D013276:Stomach Ulcer / Q000175:diagnosis