Interdisciplinary Program in Bioinformatics, Seoul National University, South Korea. khs@bibs.snu.ac.kr <khs@bibs.snu.ac.kr>|Interdisciplinary Program in Bioinformatics, Seoul National University, South Korea. khs@bibs.snu.ac.kr <khs@bibs.snu.ac.kr>|Interdisciplinary Program in Bioinformatics, Seoul National University, South Korea. khs@bibs.snu.ac.kr <khs@bibs.snu.ac.kr>