University of Lausanne and Swiss Institute of Bioinformatics, 155, chemin de Boveresses, 1066 Epalinges s/Lausanne, Switzerland. alexander.diemand@isb-sib.ch|University of Lausanne and Swiss Institute of Bioinformatics, 155, chemin de Boveresses, 1066 Epalinges s/Lausanne, Switzerland. alexander.diemand@isb-sib.ch