[1] Ctr Hosp Univ Santo Antonio, Ctr Genet Med, Unidade Bioquim Genet, Porto, Portugal
[2] UP, ICBAS, Unit Multidisciplinary Res Biomed, Porto, Portugal
[3] Ctr Hosp Univ Santo Antonio, Ctr Referencia Doencas Hereditarias Metab, Porto, Portugal
[4] Maastricht Univ, Mosakids Childrens Hosp, Med Ctr, Maastricht, Netherlands
[5] Univ Antwerp, Univ Hosp Antwerp, Ctr Metab Dis, Antwerp, Belgium
[6] Stichting Pergamijn, Sittard, Netherlands
[7] Ctr Hosp Univ Lisboa Norte, Ctr Referencia Doencas Hereditarias Metab, Lisbon, Portugal
[8] Katholieke Univ Leuven, Ctr Human Genet, Lab Mol Diag, B-3000 Leuven, Belgium
[9] Maastricht Univ, Med Ctr, Dept Clin Genet, Maastricht, Netherlands
[10] Katholieke Univ Leuven, Ctr Metab Dis, Dept Dev & Regenerat, Woman & Child Unit, Leuven, Belgium
[11] Univ Lisbon, Res Inst Med iMed ULisboa, Fac Pharm, Dept Pharmaceut Sci & Med, Lisbon, Portugal
[12] Univ Hosp Gasthuisberg, Ctr Metab Dis, Herestr 49, B-3000 Leuven, Belgium