Lin Mei1
, Kei Cho2
, C Justin Lee3
, Xiao-Jiang Li4
, Min Zhuo5
and Bong-Kiun Kaang6 
1Institute of Molecular Medicine and Genetics, Medical College of Georgia, Augusta, GA 30912, USA
2Henry Wellcome Laboratories, Faculty of Medicine and Dentistry, University of Bristol, Bristol BS1 3NY, UK
3Center for Neural Science, Korea Institute of Science and Technology, Seoul 136-791, Korea
4Department of Human Genetics, Emory University School of Medicine, Atlanta, GA 30322, USA
5Department of Physiology, University of Toronto, Toronto M5S 1A8, Canada
6Department of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul 151-747, Korea