[1] Univ Med Ctr Nijmegen, Amalia Childrens Hosp, Dept Paediat Cardiol, Geert Grootepl Zuid 10, NL-6525 GA Nijmegen, Netherlands
[2] Univ Med Ctr Utrecht, Wilhelmina Childrens Hosp, Dept Paediat Cardiol, Lundlaan 6, NL-3584 EA Utrecht, Netherlands
[3] Univ Med Ctr Nijmegen, Amalia Childrens Hosp, Dept Med Psychol, Geert Grootepl Zuid 10, NL-6525 GA Nijmegen, Netherlands
[4] Tel Aviv Univ, Dana Dwek Childrens Hosp, Dept Paediat, Paediat Cardiol Unit,Tel Aviv Sourasky Med Ctr, 6 Weizmann St, IL-6423906 Tel Aviv, Israel