Yonghong Yang, Beijing Children's Hospital affiliated to Capital Medical University, Beijing, PR China
2 September 2014
The study was financially supported by the National Natural Science Foundation of China (Grant No. 81378153) and Natural Science Foundation of Beijing (Grant No. 7143177).
Financial Support
2 September 2014
The study was financially supported by the National Natural Science Foundation of China (Grant No. 81378153) and Natural Science Foundation of Beijing (Grant No. 7143177).Competing interests
None declared