1. From the Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan (K.K.)
2. Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven Department of Cardiovascular Sciences, University of Leuven, Belgium (L.T., J.A.S.)
3. Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, The Netherlands (J.A.S.).