Zheng, B., Zheng, H., & Lin, X. (2019). Ultrasound for predicting difficult airway in obstetric anesthesia: Protocol and methods for a prospective observational clinical study. Medicine (Baltimore), 98(46), e17846. https://doi.org/10.1097/MD.0000000000017846
Chicago Style (17th ed.) CitationZheng, Bi-Xin, Huan Zheng, and Xue-Mei Lin. "Ultrasound for Predicting Difficult Airway in Obstetric Anesthesia: Protocol and Methods for a Prospective Observational Clinical Study." Medicine (Baltimore) 98, no. 46 (2019): e17846. https://doi.org/10.1097/MD.0000000000017846.
MLA (9th ed.) CitationZheng, Bi-Xin, et al. "Ultrasound for Predicting Difficult Airway in Obstetric Anesthesia: Protocol and Methods for a Prospective Observational Clinical Study." Medicine (Baltimore), vol. 98, no. 46, 2019, p. e17846, https://doi.org/10.1097/MD.0000000000017846.