1. Division of Cardiovascular Medicine, Department of Medicine, Stanford University, CA (S.-P.L., E.A.A., M.V.P.),
2. Department of Internal Medicine, Seoul National University Hospital, South Korea (S.-P.L.).
3. Stanford Center for Inherited Cardiovascular Disease, Stanford University, CA (E.A.A., C.C., M.V.P.),
4. Department of Genetics, Stanford University, CA (E.A.A., J.H.),
5. MyoKardia, South San Francisco, CA (E.M.G.).
6. Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, CT (D.J.).
7. Department of Cardiology, Boston Children’s Hospital, MA (S.D.C.).
8. Laboratory of Genetics and Molecular Cardiology and Cardiomyopathies Unit, Heart Institute (InCor), University of São Paulo, Brazil (E.A.-F.).
9. Division of Cardiovascular Medicine, University of Michigan Medical School, Ann Arbor (S.M.D.).
10. Referral Center for Cardiomyopathies, Careggi University Hospital, Florence, Italy (F.G., I.O.).
11. Department of Cardiology, Thoraxcenter, Erasmus Medical Center, Rotterdam, The Netherlands (M.M.).
12. Cardiovascular Division, Brigham and Women’s Hospital, Boston, MA (C.Y.H.).