1. Liverpool Centre for Cardiovascular Science at University of Liverpool, Liverpool John Moores University and Liverpool and Heart and Chest Hospital, United Kingdom (T.B., D.P., A.H.A.-R., G.Y.H.L.).
2. Department of General and Specialized Surgery, Sapienza University of Rome, Italy (T.B.).
3. Department of Clinical Internal, Anesthesiologic and Cardiovascular Sciences, Sapienza University of Rome, Italy (D.P., P.P., F.V.).
4. Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.).
5. Stroke Division, Department of Medicine for Older People, Whiston Hospital, St Helens and Knowsley Teaching Hospitals NHS Trust, Prescot, United Kingdom (A.H.A.-R.).
6. Danish Center for Clinical Health Services Research, Department of Clinical Medicine, Aalborg University, Denmark (G.Y.H.L.).