[1] NHGRI, Gen Technol Branch, NIH, Bethesda, MD 20892 USA
[2] NHGRI, Genet Dis Res Branch, NIH, Bethesda, MD 20892 USA
[3] NHGRI, Genet & Mol Biol Branch, NIH, Bethesda, MD 20892 USA
[4] NHGRI, Pathol Lab, NIH, Bethesda, MD 20892 USA
[5] NINDS, Clin Neurogenet Unit, NIH, Bethesda, MD 20892 USA
[6] NINDS, Neurogenet Branch, NIH, Bethesda, MD 20892 USA