1. Department of Pediatrics, Yongchuan Hospital of Chongqing Medical University, Chongqing, China (mainland)
2. Department of Infectious Diseases, Yongchuan Hospital of Chongqing Medical University, Chongqing, China (mainland)
3. Department of Neonatology, Children's Hospital of Chongqing Medical University, Chongqing, China (mainland)