[1] FREE UNIV AMSTERDAM HOSP,DEPT CLIN GENET,AMSTERDAM,NETHERLANDS
[2] FREE UNIV AMSTERDAM HOSP,DEPT OPHTHALMOL,AMSTERDAM,NETHERLANDS
[3] FREE UNIV AMSTERDAM HOSP,DEPT PATHOL,AMSTERDAM,NETHERLANDS
[4] UNIV AMSTERDAM,ACAD MED CTR,INST HUMAN GENET,1105 AZ AMSTERDAM,NETHERLANDS
[5] UNIV GRONINGEN,DEPT MED GENET,9700 AB GRONINGEN,NETHERLANDS
[6] BOVEN IJ HOSP,DEPT PEDIAT,AMSTERDAM,NETHERLANDS