Yingjun X, Wen T, Yujian L, Lingling X, Huimin H, Qun F, Junhong C. Microduplication of chromosome Xq25 encompassing STAG2 gene in a boy with intellectual disability. European Journal of Medical Genetics. 2015 Feb;58(2):116–21. doi: 10.1016/j.ejmg.2014.10.002.