1. Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore 117604.
2. School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551.
3. Department of Biological Sciences, National University of Singapore, 14 Science Drive, Singapore 117543.
4. Genome Institute of Singapore, 60 Biopolis Street, Genome, Singapore 138672.