Li Luyun Xia Jiahui Dai HepingNational Training Center of Medical Cytogenetics; Department of Medical Genetics; Medical Genetics Laboratory; Hunan Medical College;

• 湖南医学院医学细胞遗传学国家培训中心;湖南医学院医学遗传学研究室;湖南医学院医学遗学传教研室;