1. Division of Cardiology (K.B.-J., N.B.M., D.R., S.N., I.A.E., D.K., R.W.S., S.K.P.), Department of Internal Medicine, McGovern Medical School, University of Texas Health Science Center at Houston.
2. Division of Medical Genetics (D.M.M., S.K.P.), Department of Internal Medicine, McGovern Medical School, University of Texas Health Science Center at Houston.