[1] Univ Minnesota, Dept Genet Cell Biol & Dev, Minneapolis, MN 55455 USA
[2] Univ Minnesota, Arnold & Mabel Beckman Ctr Transposon Res, Minneapolis, MN 55455 USA
[3] Univ Minnesota, Res Anim Resources, Minneapolis, MN 55455 USA
[4] Univ Minnesota, Dept Pediat, Minneapolis, MN 55455 USA
[5] Univ Minnesota, Dept Otolaryngol, Minneapolis, MN 55455 USA
[6] Univ Minnesota, Ctr Canc, Minneapolis, MN 55455 USA
[7] Univ Minnesota, Inst Human Genet, Minneapolis, MN 55455 USA