[1] Erasmus MC, Dept Clin Genet, NL-3015 GE Rotterdam, Netherlands
[2] UCL, Res Dept Genet Evolut & Environm, London, England
[3] Leiden Univ, Med Ctr, Dept Human & Clin Genet, Leiden, Netherlands
[4] Cent Manchester Univ Hosp NHS Fdn Trust, Dept Med Genet, Manchester, Lancs, England
[5] Dartmouth Hitchcock Med Ctr, Dept Clin Genet, Lebanon, NH 03766 USA
[6] Ctr Human Genet, Dresden, Germany
[7] Kaiser Permanente San Jose Med Ctr, Dept Genet, San Jose, CA USA
[8] Duke Univ, Med Ctr, Dept Pediat, Durham, NC 27710 USA
[9] St George Hosp, Dept Med Genet, London, England
[10] Brigham & Womens Hosp, Translat Med Div, Boston, MA 02115 USA
[11] Cardiff Univ, Inst Med Genet, Cardiff, S Glam, Wales
[12] Policlin Gipuzka, Dept Mol Genet, San Sebastian, Spain
[13] Prince Wales Hosp, Dept Mol Genet, Randwick, NSW 2031, Australia
[14] Univ Valencia, Inst Med Genom, Valencia, Spain
[15] Childrens Hosp Boston, Dept Neurol, Boston, MA USA