Beijing, China

Author Affiliations: Department of Pediatric Surgery, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China (Zhang JZ)

Corresponding Author: Jin-Zhe Zhang, MD, Honorary Fellow of the Royal College of Surgeons (HonFRCS), Member of Chinese Academy of Engineering (MCAE), Professor and Senior Consultant of Pediatric Surgery, Beijing Children's Hospital, Beijing 100045, China (Email: jinzhezhang@sina.com)

doi:10.1007/s12519-009-0018-1