1. Department of Clinical Sciences, Lund University, Malmö (A.F., F.R., V.H.).
2. Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden (A.F.).
3. Department of Neuroscience, Imaging & Clinical Sciences, “G.d’Annunzio” University, Chieti-Pescara (F.R.).
4. Casa di Cura Villa Serena, Città Sant’Angelo, Italy (F.R.).
5. Department of Internal Medicine, Skåne University Hospital, Malmö, Sweden (V.H.).
6. Department of Nursing, Bethel University, St. Paul, MN (K.E.S.).
7. Department of Physical Medicine & Rehabilitation, Johns Hopkins University School of Medicine, Baltimore, MD (T.H.C.).
8. Vanderbilt University Medical Center, Nashville, TN (J.A.S.M.).
9. Kansas City Heart Rhythm Institute, Overland Park, KS (R.G.).
10. University of Iowa, Iowa City (B.O.).