1 Department of Medical Genetics, Shanghai Children's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200040, China. Email: angei200598@126.com.
2 Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA.
3 Department of Paediatrics and Adolescent Medicine, The University of Hong Kong, Hong Kong 999077, China.
4 Department of Human Genetics and Pediatrics, Emory University School of Medicine, Atlanta, GA 30322, USA.
5 Section of Clinical Genetics and Metabolism, Department of Pediatrics, Children's Hospital Colorado, University of Colorado, Aurora, CO 80045, USA. Email: chun-hui.tsai@childrenscolorado.org.