Conflict of interest
All authors declare no conflict of interests
Nannan Lou1, Xiang Ma1, 2*, Qingxin
Luo3, 4, Xiaoling Wei1, 2, Yun
Zhang1, 2, Jing Guo1, 2, Jing
Wang1, 2, Zhongtao Gai1, 2*
1. Department of Respiratory Diseases, Children’s Hospital Affiliated to
Shandong University (Jinan Children’s Hospital), Jinan, Shandong,
250022, China.
2. Jinan Key Laboratory of Pediatric Respiratory diseases, Jinan
Children’s Hospital, Jinan, Shandong, 250022, China.
3. Department of Biostatistics, School of Public Health, Cheeloo College
of Medicine, Shandong University, Jinan, 250000, People’s Republic of
China.
4. Institute for Medical Dataology, Cheeloo College of Medicine,
Shandong University, Jinan, 250000, People’s Republic of China.
* They are co-corresponding authors.