Cited 13 times since 2011 (1 per year) source: EuropePMC International journal of cardiology, Volume 149, Issue 2, 1 1 2011, Pages 246-247 Wanted! 8000 heart patients: identification of adult patients with a congenital heart defect lost to follow-up. Vis JC, van der Velde ET, Schuuring MJ, Engelfriet-Rijk LCJM, Harms IM, Mantels S, Bouma BJ, Mulder BJM