[1] Yale Univ, Program Computat Biol & Bioinformat, New Haven, CT 06511 USA
[2] Cincinnati Childrens Res Ctr, Dept Pediat, Cincinnati, OH 45229 USA
[3] Cincinnati Childrens Res Ctr, Dept Mol & Dev Biol, Cincinnati, OH 45229 USA
[4] Univ Cincinnati, Dept Environm Hlth, Coll Med, Cincinnati, OH 45267 USA
[5] Univ Cincinnati, Ctr Environm Genet, Coll Med, Cincinnati, OH 45267 USA