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1 Interdisciplinary Center of Bioinformatics (IZBI), University of Leipzig, Germany 2 Institute of Medical Informatics, Statistics and Epidemiology (IMISE), University of Leipzig, Germany

Medical University of Graz, Institute for Medical Informatics, Statistics and Documentation, Graz, Austria

1 Department of Medical Data Services, Biostatistics Group, and 2 Department of Drug Discovery Support, General Pharmacology Group, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach, Germany

1 Institut für Medizinische Biometrie und Statistik, Universität zu Lübeck, Lübeck, Germany 2 Duke Clinical Research Institute, Durham, NC, USA

Novartis Pharma AG, Basel, Switzerland 2 Novartis Pharmaceuticals, East Hanover, NJ , USA

Ludwig-Maximilians-University, Munich, Germany

1 Bioinformatics Unit, University of Hannover, Hannover, Germany 2 Novartis Pharma AG, Basel, Switzerland 3 Research Unit Genetics and Biometry, Research Institute for the Biology of Farm Animals, Dummerstorf, Germany

University of Heidelberg, Department of Medical Biometry, Heidelberg, Germany

1 Department of Tropical Hygiene and Public Health, University Hospital Heidelberg, Heidelberg, Germany 2 Public Health State Office, LGA, Baden-Wuerttemberg, Germany 3 Department for Infectious Disease Epidemiology, Robert Koch Institute, Berlin, Germ

1 Institute of Medical Biometry and Medical Informatics, University Hospital of Freiburg, Freiburg, Germany 2 Center for Clinical Trials, University Hospital of Freiburg, Freiburg, Germany 3 St.-Josefs-Krankenhaus, Freiburg, Germany 4 Wyeth Pharma Gmb

1 Institute of Microbiology and Infectious Diseases Epidemiology of Gilead/Mara Hospitals, Bielefeld, Germany 2 Department of Public Health Medicine, School of Public Health, University of Bielefeld, Germany

1 Centre for Health Protection, State of Hesse, Germany 2 Joint Research Centre, European Commission, Ispra (Va), Italy

Population-based cancer registry Bavaria, Registration office, Erlangen, Germany

1 Department of Tropical Hygiene and Public Health, University of Heidelberg, Germany, 2 Department of Otolaryngology, Head and Neck Surgery, University of Heidelberg, Germany

1 Institute of Epidemiology and Social Medicine, University of Münster, Münster, Germany 2 Bremen Institute of Prevention Research and Social Medicine (BIPS), University of Bremen, Bremen, Germany 3 Berufsgenossenschaftliches Forschungsinstitut für Arb

1 Department of Statistics, University of Dortmund, Dortmund, Germany 2 Institute for Occupational Physiology at the University of Dortmund, Dortmund, Germany

1 Institut für Medizinische Informatik, Biometrie und Epidemiologie, Universitätsklinikum Essen, Essen, Germany 2 Koordinierungszentrum Klinische Studien am Universitätsklinikum Heidelberg, Heidelberg, Germany

Schering AG, Berlin, Germany

Dipartimento di Informatica e Sistemistica, Laboratorio di Informatica Medica, Università di Pavia, Pavia, Italy