A study for the effective dose of propofol combined with remifentanil for the endotracheal intubation with⁃ out muscle relaxants in children by sequential method 
TAN Meiyun, ZHAO Bingcheng, LIU Kexuan.
The Journal of Practical Medicine . 2021, (10): 1284 -1287 .  DOI: 10.3969/j.issn.1006⁃5725.2021.10.010