1. China-Japan Friendship School of Clinical Medicine, Capital Medical University, Beijing 100029, China
2. National Center for Respiratory Medicine, State Key Laboratory of Respiratory Health and Multimorbidity, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Department of Pediatrics, China-Japan Friendship Hospital, Beijing 100029, China
3. National Human Genetic Resources Center, National Research Institute for Family Planning, Beijing 100081, China
4. Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China