Swiss Institute of Bioinformatics, Switzerland. Claudio.Lottaz@molgen.mpg.de|Swiss Institute of Bioinformatics, Switzerland. Claudio.Lottaz@molgen.mpg.de|Swiss Institute of Bioinformatics, Switzerland. Claudio.Lottaz@molgen.mpg.de|Swiss Institute of Bioinformatics, Switzerland. Claudio.Lottaz@molgen.mpg.de