Application of dexmedetomidine and low-dose sufentanil in elderly patients taking painless gastroenterology and its effect on cognitive function 

Wen Hairu, Zhang Le, Zhang Qin
International Medicine and Health Guidance News . 2023, (10): 1396 -1399 .  DOI: 10.3760/cma.j.issn.1007-1245.2023.10.014

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