Professor

Regents Professor of Chemical and Biological Engineering, Montana State University

Professor of Molecular Microbiology, University of Nottingham

University of Groningen

Professor of Medicine and Microbiology, Mayo Clinic

University of Duisburg-Essen

Professor of Food Microbiology, Agricultural University of Athens, Athens, Greece

Professor of Microbial Ecology, Aarhus University

Professor, The University of Texas at San Antonio

Professor Emeritus, School of Natural Sciences, Bangor University