1. From the Department of Orthopedic Surgery (W.Z.), National Emergency Medical Team (Y.W.), Department of Pulmonary and Critical Care Medicine (K.X.), Department of Nursing (H.Z.), Department of Infectious Diseases (Y.T.), and Department of Anesthesiology (J.X.), The Second Xiangya Hospital, Central South University, Changsha, China; Department of Anesthesiology and Perioperative Medicine, Universi