Spinal anaesthesia for patients with coronavirus disease 2019 and possible transmission rates in anaesthetists: retrospective, single-centre, observational cohort study

Qi Zhong, Yin Y. Liu, Qiong Luo, Yu Zou, Hai X. Jiang, Hui Li, Jing J. Zhang, Zhen Li, Xin Yang, M Ma, Li Tang, Ying Y. Chen, Feng Zheng, Jian J. Ke, Zong Z. Zhang