[1] Univ Kentucky, Kentucky Clin, Dept Pediat, Div Clin Biochem Genet & Dysmorphol, Lexington, KY 40536 USA
[2] Univ Calif Los Angeles, David Geffen Sch Med, Cedars Sinai Med Ctr, Inst Med Genet, Los Angeles, CA 90095 USA
[3] Univ Calif San Francisco, Dept Pediat, Div Med Genet, San Francisco, CA 94143 USA
[4] Univ Utah, Hlth Sci Ctr, Dept Pediat, Div Med Genet, Salt Lake City, UT USA
[5] Univ Utah, Hlth Sci Ctr, Dept Pathol, Salt Lake City, UT USA
[6] Univ Utah, Hlth Sci Ctr, Dept Human Genet, Salt Lake City, UT USA
[7] Univ Utah, Hlth Sci Ctr, Dept Obstet & Gynecol, Salt Lake City, UT USA