1. Cell Biology Program, Sloan-Kettering Institute, Memorial Sloan-Kettering Cancer Center, New York, NY 10021
2. Department of Molecular and Cellular Biology and Biochemistry, Brown University, Providence, RI 02912
3. Weill Graduate School of Medical Sciences of Cornell University, New York, NY 10021
4. Department of Medical Biochemistry, Ehime University School of Medicine, Ehime 791-0301, Japan
5. Amgen Inc., Seattle, WA 98101
6. Department for Human Genetics, K.U. Leuven and Flanders Interuniversity Institute for Biotechnology (VIB-4), 3000 Leuven, Belgium
7. Biochemical Institute, Christian-Albrechts University, D-24098 Kiel, Germany