1. The Institute of Molecular and Cell Biology, Singapore 138673
2. Laboratory of Cell and Medical Biology, Genome Institute of Singapore, Singapore 138672
3. Department of Molecular and Human Genetics and Bone Disease Program of Texas, Baylor College of Medicine, Houston, TX 77030
4. Department of Molecular Genetics, University of Texas M.D. Anderson Cancer Center, Houston, TX 77030
5. Department of Medicine, Winthrop-University Hospital, Mineola, NY 11501