Affiliation: | 1. Department of Computer Science and Center for Computational Molecular Biology, Brown University, 115 Waterman St, Box 1910, Providence, RI 02912, USA;2. Department of Computer Science and Engineering, University of California San Diego, APM 3132, 9500 Gilman Drive Dept. 0114, La Jolla, CA 92093-0114, USA;3. School of Computer Science, Tel Aviv University, Tel Aviv 69978, Israel |