Citation
If you publish research that uses xwas you have to cite it as follows:
Gao, F., Chang, D., Biddanda, A., Ma, L., Guo, Y., Zhou, Z., & Keinan, A. (2015). XWAS: a toolset for genetic data analysis and association studies of the X chromosome. Journal of Heredity, 106(5), 666-671. https://doi.org/10.1093/jhered/esv059