Effect of penehyclidine hydrochloride on cognitive function in elderly patients undergoing oral and maxillofacial surgery
ZHAO Peng-cheng, LIU Jin-xing, JI Jun
China Journal of Oral and Maxillofacial Surgery . 2019, (3): 261 -264 .  DOI: 10.19438/j.cjoms.2019.03.014