Institute for Medical Informatics, Medical University of Luebeck, 23538 Luebeck, Germany. linder@imi.uni-luebeck.de <linder@imi.uni-luebeck.de>|Institute for Medical Informatics, Medical University of Luebeck, 23538 Luebeck, Germany. linder@imi.uni-luebeck.de <linder@imi.uni-luebeck.de>|Institute for Medical Informatics, Medical University of Luebeck, 23538 Luebeck, Germany. linder@imi.uni-luebeck.de <linder@imi.uni-luebeck.de>|Institute for Medical Informatics, Medical University of Luebeck, 23538 Luebeck, Germany. linder@imi.uni-luebeck.de <linder@imi.uni-luebeck.de>|Institute for Medical Informatics, Medical University of Luebeck, 23538 Luebeck, Germany. linder@imi.uni-luebeck.de <linder@imi.uni-luebeck.de>|Institute for Medical Informatics, Medical University of Luebeck, 23538 Luebeck, Germany. linder@imi.uni-luebeck.de <linder@imi.uni-luebeck.de>|Institute for Medical Informatics, Medical University of Luebeck, 23538 Luebeck, Germany. linder@imi.uni-luebeck.de <linder@imi.uni-luebeck.de>