enet. Med. 10, 294-300 12008). Acknowledgments: We thank R. Cohen, V. Corkin. G. Richards. and &Bale for helpful comments. as well as & Keithly and M. Clifton for their technical help. We thank P. Suter; H. Gudtjartsson. S. A Gohonsson. and K Stefannon from deCODE Genetic for assistance with sequence analy