1. Cleveland Clinic, OH (D.P., M.B., P.S., K.G.T., M.S., B.L.W.).
2. Allina Health Minneapolis, MN (P.V., I.S.).
3. Duke University Medical Center Durham, NC (J.P., L.M.K.).
4. Department of Cardiology, Northwell Health, Manhasset, NY (L.M.E.).
5. University Heart Center Hamburg, Germany (S.H.).
6. Philips, Colorado Springs, CO (N.F.).