[1] Univ Sherbrooke, Sherbrooke, PQ J1K 2R1, Canada
[2] Duke Univ, Med Ctr, Durham, NC USA
[3] Univ Hosp Amsterdam, Acad Med Ctr, Amsterdam, Netherlands
[4] Greenwood Genet Ctr, Greenwood, SC 29646 USA
[5] Hosp Clin Porto Alegre, Med Genet Serv, Porto Alegre, RS, Brazil
[6] UCSF Benioff Childrens Hosp Oakland, Oakland, CA USA
[7] BioMarin Pharmaceut Inc, Novato, CA USA