- G protein-coupled receptor kinase 4 gene variants in human essential hypertension. Felder, R.A., Sanada, H., Xu, J., Yu, P.Y., Wang, Z., Watanabe, H., Asico, L.D., Wang, W., Zheng, S., Yamaguchi, I., Williams, S.M., Gainer, J., Brown, N.J., Hazen-Martin, D., Wong, L.J., Robillard, J.E., Carey, R.M., Eisner, G.M., Jose, P.A. Proc. Natl. Acad. Sci. U.S.A. (2002)