[1] Stanford Univ, Dept Pediat, Div Med Genet, Palo Alto, CA 94304 USA
[2] Katholieke Univ Leuven, Dept Human Genet, Louvain, Belgium
[3] Univ Hosp Gasthuisberg, B-3000 Louvain, Belgium
[4] Mayo Clin, Mayo Med Labs, Rochester, MN USA
[5] Univ Washington, Dept Pediat, Div Genet & Dev, Grp Hlth Cooperat, Seattle, WA 98195 USA
[6] Oregon Hlth Sci Univ, Doernbecher Childrens Hosp, Child Dev & Rehabil Ctr, Dept Mol & Med Genet, Portland, OR 97201 USA
[7] Oregon Hlth Sci Univ, Dept Pediat, Div Metab, Portland, OR 97201 USA
[8] Childrens Hosp Los Angeles, Dept Pediat, Los Angeles, CA 90027 USA
[9] Burnham Inst, La Jolla, CA 92037 USA
[10] San Jose Hosp, San Jose, CA USA