Komazawa Y, Yuki M, Fukuba N, Kobayashi Y, Ishitobi H, Nakashima S, Nagaoka M, Takahashi Y, Shizuku T
Background/Aims: Unsedated transnasal esophagogastroduodenoscopy (EGD) is affected by a poor scope lens-cleaning function. We have previously reported good, albeit limited, effects of an oolong tea washing solution; here, we evaluated...