Bioinformatics Program, Seoul National University, Seoul 151-747, Korea.|Bioinformatics Program, Seoul National University, Seoul 151-747, Korea.|Bioinformatics Program, Seoul National University, Seoul 151-747, Korea.|Bioinformatics Program, Seoul National University, Seoul 151-747, Korea.|Bioinformatics Program, Seoul National University, Seoul 151-747, Korea.|Bioinformatics Program, Seoul National University, Seoul 151-747, Korea.