Authors: Janneke G Langendonk; Jonathan C P Roos; Lindsay Angus; Monique Williams; François P J Karstens; Johannes B C de Klerk; Charlé Maritz; Tawfeg Ben-Omran; Catherine Williamson; Robin H Lachmann; Elaine Murphy Journal: J Inherit Metab Dis Date: 2011-09-15 Impact factor: 4.982