1. Department of Pediatrics, The Fifth Hospital of Xiamen, Tongmin Branch of The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361101, P.R. China
2. Department of Internal Medicine, The First College of Clinical Medical Science, China Three Gorges University, Yichang Central People's Hospital, Yichang, Hubei 443003, P.R. China
3. Department of Orthopedics, The Fifth Hospital of Xiamen, Tongmin Branch of The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361101, P.R. China