Author details
1 Department of Respiratory Medicine, Children’s Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400010, China; 2 Department of Radiology, Children’s Hospital of Chongqing Medical University; 3 Department of Pathology, Children’s Hospital of Chongqing Medical University