Name	Location	Contribution
Chen Zhang, PhD	Department of Pediatrics, Qilu Hospital of Shandong University, China	Drafting/revision of the manuscript for content, including medical writing for content; major role in the acquisition of data
Junli Shan, MS	Department of Pediatrics, Qilu Hospital of Shandong University, China	Major role in the acquisition of data
Jiaqi Su, MS	Department of Pediatrics, Qilu Hospital of Shandong University; Department of Respiratory Disease, Children's Hospital affiliated to Shandong University, Jinan, China	Drafting/revision of the manuscript for content, including medical writing for content; analysis or interpretation of data
Guan Wang, PhD	Department of Pediatrics, Qilu Hospital of Shandong University, China	Analysis or interpretation of data
Qin Huo, MS	Department of General Practice, Fourth People's Hospital of Jinan, China	Analysis or interpretation of data
Rui Xu, MS	Department of Pediatrics, Qilu Hospital of Shandong University, China	Analysis or interpretation of data
Meng Dong,PhD	Department of Pediatrics, Qilu Hospital of Shandong University, China	Major role in the acquisition of data; study concept or design