1. From the Studies Coordinating Centre (J.A.S., T.R., L.T.), Division of Hypertension and Cardiovascular Rehabilitation, Department of Cardiovascular Diseases, University of Leuven, Leuven, Belgium; Department of Epidemiology (J.A.S., T.R.), Maastricht University, Maastricht, The Netherlands; Fu Wai Hospital (Z.W.), Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.