Clinical efficacy and safety of tigecycline based on therapeutic drug monitoring for carbapenem-resistant Gram-negative bacterium pneumonia in intensive care units oleh Xiang-rong Bai, Zhi-zhou Wang, Wen-chao Li, Yan-gai Wang, Ran Lou, Xin Qu, Linlin Fan, Wei Zhang, Yan-chuan Wu, Su-ying Yan, Lan Zhang