BIO Web of Conferences

Applicable observation of butorphanol in painless colonoscopy examination

Xuefeng Li, Feng Liang and Guifeng Liu

BIO Web Conf., 8 (2017) 01044

Published online: 11 January 2017

DOI: 10.1051/bioconf/20170801044

Xuefeng Li

Feng Liang

Guifeng Liu

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