Reaction to: Persson et al. Educational achievements in Pierre Robin sequence. J Plast Surg Hand Surg 2013;47(1):36-9. - van Nunen, Daan P. F.; Filip, Charles; Feragen, Kristin J. B.; van den Boogaard, Marie-José H.; Breugem, Corstiaan C. (Journal of Plastic Surgery & Hand Surgery (Taylor & Francis Ltd), 2014)