1. Department of Cardiology, Ziekenhuis Oost-Limburg , Synaps Park 1, 3600 Genk , Belgium
2. Faculty of Medicine and Life Sciences, Hasselt University , Agoralaan, 3590 Diepenbeek , Belgium
3. Department of Cardiology, Jessa Hospital , 3500 Hasselt , Belgium
4. Department of Cardiology, Ziekenhuis Oost-Limburg , Synaps Park 1 , 3600 Genk, Belgium
5. Department of Cardiology, Imeldaziekenhuis , 2820 Bonheiden , Belgium