[1] SUNY Albany, Dept Biol Sci, Albany, NY 12222 USA
[2] SUNY Albany, Dept Geog & Planning, Albany, NY 12222 USA
[3] SUNY Albany, Dept Comp Sci, Albany, NY 12222 USA
[4] New York State Dept Hlth, Albany, NY 12237 USA
[5] Rensselaer Polytech Inst, Dept Comp Sci, Troy, NY 12180 USA