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aUniversity Medical Centre Utrecht, Utrecht
bDepartment of Cardiology, St Antonius Hospital, Nieuwegein, the Netherlands
cState University of Milan, Milan, Italy
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Correspondence to Pierfrancesco Agostoni, MD, PhD, Department of Cardiology, St Antonius Hospital, Koekoeslaan 1, Nieuwegein 3435 CM, the Netherlands Tel: +31 088 320 1100; fax: +31 030 609 2274; e-mail: email@example.com
Received June 11, 2015
Received in revised form August 4, 2015
Accepted August 7, 2015