Guo-rong Zheng 郑国荣

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National data show that in China mainland unsedated gastrointestinal (GI) endoscopy has been applied in most hospitals for clinical examination, while sedated GI endoscopy is only performed in some hospitals. The purpose of this study was to compare sedated versus unsedated GI endoscopy regarding cost, safety, degree of comfort, tolerance level and overall(More)
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