Fujian Medical University - Department of Respiratory, Fujian Medical University - Department of Hematology, Fujian Medical University - Department of Surgical Critical Medicine, Fujian Medical University - National Emergency Rescue Team (Fujian), Fujian Provincial Health Commission, Fujian Normal University - College of Mathematics and Statistics, Putian University - Department of Orthopedics, Fujian Medical University - Department of Pediatric Surgery, Fujian Medical University - Department of Endocrinology, Fujian Medical University - Quanzhou First Hospital, Fujian Provincial Center for Disease Control and Prevention, Fujian Medical University - Department of Respiratory, Fujian Normal University - College of Mathematics and Statistics, Fujian Medical University - Department of Respiratory, Fujian Medical University - Department of Respiratory, Fujian Medical University - Department of Respiratory, affiliation not provided to SSRN, Fujian Medical University - Department of Respiratory, Fujian Medical University - Department of Infection Disease, Fujian Medical University - Department of Respiratory and Fujian Medical University - Department of Nursing