[1] Penn State Univ, Bioinformat & Genom Program, State Coll, PA 16802 USA
[2] Penn State Hershey, Coll Med, Dept Biochem & Mol Biol, Hershey, PA 17033 USA
[3] Univ Penn, Dept Comp & Informat Sci, 200 S 33Rd St, Philadelphia, PA 19104 USA
[4] Washington Univ, Sch Med, Edison Family Ctr Genome Sci & Syst Biol, Dept Genet, St Louis, MO 63108 USA
[5] Univ N Carolina, Dept Genet, Chapel Hill, NC 27599 USA
[6] Univ N Carolina, Dept Biostat, Chapel Hill, NC 27599 USA
[7] Univ N Carolina, Dept Comp Sci, Chapel Hill, NC 27599 USA
[8] Cleveland Clin Fdn, Lerner Res Inst, Dept Quantitat Hlth Sci, Cleveland, OH 44195 USA
[9] Penn State Univ, Huck Inst Life Sci, Ctr Computat Biol & Bioinformat, State Coll, PA 16802 USA