1. A*STAR (Agency for Science, Technology and Research), Institute of Molecular and Cell Biology (IMCB), 61 Biopolis Drive, Proteos#3-09, Singapore 138673
2. Department of Chemistry and Molecular Biology, University of Gothenburg, SE-405 30 Gothenburg, Sweden
3. A*STAR (Agency for Science, Technology and Research), Singapore Immunology Network (SIgN), 8A Biomedical Grove, Immunos, Singapore 138648
4. National Cancer Institute, Mouse Cancer Genetics Program, NCI-Frederick, Bldg. 560, 1050 Boyles Street, Frederick, MA 21702-1201, USA
5. Department of Biochemistry, National University of Singapore (NUS), Singapore 117597