Vallverdu, Montserrat Valocik, Gabriel, P.J.Safarik University , Kosice , Slovakia Valsecchi, Cecilia, Clinica y Maternidad Suizo Argentina Av Pueyrredon 1484 1426 Buenos Aires Valverde André, Irene Vamos, Mate, University Hospital Frankfurt - Goethe University Vámosi, Zoltan van Boven, Nick Van De Borne, Philippe Van de Veire, Nico Van den Bussche, Karen van der Pol, Edwin van Dijk, J. Gert, Department of Neurology and Clinical Neurophysiology, Leiden University Medical Centre, Leiden, the Netherlands van Dijk, Nynke, Department of Family Medicine, Academic Medical Centre, University of Amsterdam, The Netherlands Van Domburgh, Ron T., Thoraxcenter, Rotterdam Van Es, Gerrit-Anne, Cardialysis, Rotterdam, the Netherlands van Geuns, Robert Jan, Thoraxcenter, Erasmus University MC, Rotterdam van Laethem, Johan Van Puyvelde, Joeri van Ramshorst, Jan van Soest, Gijs Vani, Anish Vanoli, Jennifer Vanyukov, Aleksandr Varan, Birgul Varan, Birgul, Baskent University Medical Faculty, Department of Pediatric Cardiology, Ankara/Turkey (Türkiye)