1 Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Chongqing, China.
2 National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China.
3 Chongqing Key Laboratory of Pediatrics, Chongqing, China.
4 Lanzhou University Institute of Health Data Science, Lanzhou, China.
5 Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.
6 Key Laboratory of Evidence Based Medicine and Knowledge Translation of Gansu Province, Lanzhou, China.