Case Report: Whole-Exome Sequencing of Hypothalamic Hamartoma From an Infant With Pallister-Hall Syndrome Revealed Novel de novo Mutation in the GLI3 oleh Yue Yang, Fang Shen, Xie-Pan Jing, Nu Zhang, Shang-Yu Xu, Dan-Dong Li, Ling-Li Zhou, Guang-Hui Bai, Huang-Yi Fang, Huang-Yi Fang, Zhong-Ding Zhang, Chen Pang, Chen Pang, Jian Lin, Han-Song Sheng