1. Oregon Health & Science University, Portland, Oregon (S.B.H.)
2. Yale New Haven Hospital, New Haven, Connecticut (D.J.)
3. Mayo Clinic Arizona, Scottsdale, Arizona (S.J.L.)
4. Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania (A.O.)
5. Duke University Medical Center, Durham, North Carolina (A.W.)
6. MyoKardia, South San Francisco, California (D.Z., J.L., J.L., M.S., A.J.S.)