1. Council on Hypertension, European Society of Cardiology, University of Milano-Bicocca and IRCCS, Istituto Auxologico Italiano, Milan 20122 , Italy
2. Cardiac Unit, G. da Saliceto Hospital, AUSL Piacenza , Piacenza 29121 , Italy
3. Clinical Cardiology, Policlinico San Donato, University of Milan , S. Donato Milanes 20097 , Italy
4. Department of Preventive Cardiology, Wroclaw Medical University , 50-367 Wrocław , Poland