[1] Chongqing Med Univ, Natl Clin Res Ctr Child Hlth & Disorders, Minist Educ, Key Lab Child Dev & Disorders,Childrens Hosp,Chong, 136 Zhongshan Rd 2, Chongqing 400014, Peoples R China
[2] Chongqing Med Univ, Natl Clin Res Ctr Child Hlth & Disorders, Childrens Hosp, Minist Educ,Chongqing Key Lab Pediat,Dept Orthopae, Chongqing, Peoples R China
[3] Chongqing Med Univ, Childrens Hosp, Dept Orthoped, Chongqing, Peoples R China
[4] Minist Educ, Key Lab Child Dev & Disorders, Chongqing, Peoples R China
[5] Natl Clin Res Ctr Child Hlth & Disorders, Chongqing, Peoples R China
[6] China Int Sci & Technol Cooperat Base Child Dev &, Chongqing, Peoples R China
[7] Chongqing Med Univ, Jiangxi Hosp, Affiliated Childrens Hosp, Chongqing, Peoples R China