[1] Univ Instelling Antwerp VIB, Dept Mol Genet, B-2610 Antwerp, Belgium
[2] Univ Antwerp Hosp, Div Neurol, Antwerp, Belgium
[3] Univ Antwerp Hosp, Neuromuscular Reference Ctr, Antwerp, Belgium
[4] Univ Instelling Antwerp, Born Bunge Fdn, B-2610 Antwerp, Belgium
[5] Free Univ Brussels, Dept Med Genet, B-1050 Brussels, Belgium