1. Northwestern University Feinberg School of Medicine, Chicago, IL (S.S.K., L.C.P., X.H., K.H., P.C.Z., L.M.Y., P.G.).
2. Research Triangle International, Research Triangle Park, NC (R.B.M.).
3. Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (N.A.B., C.N.B.M.).
4. Columbia University Irving Medical Center, New York City, NY (E.C.M., R.R.).
5. Indiana University School of Medicine, Bloomington, IN (C.S.).
6. University of Pittsburgh School of Medicine, Pittsburgh, PA (J.M.C., M.R.).
7. National Heart, Lung, and Blood Institute, Bethesda, MD (V.L.P., J.V.).
8. University of California Irvine School of Medicine, Irvine, CA (J.K.K.).
9. School of Public Health, University of South Carolina, Columbia, SC (A.D.L.-C.).
10. University of Pennsylvania Perelman School of Medicine, Philadelphia, PA (J.L.).
11. University of Utah School of Medicine, Salt Lake City, UT (L.H.T.).
12. University of Texas Medical Branch, Galveston, TX (G.R.S.).
13. The Ohio State University College of Medicine, Columbus, OH (W.A.G.).