[1] ETH, CH-8092 Zurich, Switzerland
[2] Swiss Inst Bioinformat, CH-8092 Zurich, Switzerland
[3] CRG, Bioinformat & Genom Programme, Barcelona 08003, Spain
[4] Univ Penn, Dept Biol, Philadelphia, PA 19104 USA
[5] Univ Penn, Penn Genome Frontiers Inst, Philadelphia, PA 19104 USA
[6] Stockholm Univ, Stockholm Bioinformat Ctr, Swedish eSci Res Ctr, Dept Biochem & Biophys,Sci Life Lab, SE-17121 Solna, Sweden
[7] Wellcome Trust Genome Campus, European Bioinformat Inst, Cambridge CB10 1SD, England