1 Department of Pediatric Respiratory Medicine, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
2 Department of Pediatrics, the First People's Hospital of Jiashan, Zhejiang, China.
3 Department of Obstetrics & Gynecology, Queen Elizabeth II Hospital, Alberta, Canada.
4 Department of Neonatology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. Electronic address: zhangyongjun@sjtu.edu.cn.
5 Department of Pediatrics, the First People's Hospital of Jiashan, Zhejiang, China. Electronic address: lizhongjie52@dingtalk.com.