[1] Capital Med Univ, Natl Ctr Childrens Hlth, Beijing Childrens Hosp, Dept Endocrinol Genet & Metablism, Beijing, Peoples R China
[2] Maternal & Child Hlth Hosp Guanxi Zhuang Autonomo, Genet & Metab Ctr Lab, Nanning, Guangxi, Peoples R China
[3] Shanghai Jiao Tong Univ, Sch Med, Shanghai Childrens Med Ctr, Shanghai, Peoples R China
[4] Harvard Med Sch, Boston Childrens Hosp, Div Genet & Genom, Boston, MA USA