• 1966-1971 Assistant Professor of Pathology, University of Gothenburg • 1972-1982 University Lecturer in Pathology, Department of Pathology, University of Linköping, Sweden (a permanent appointment by governmental decision) • 1976-1980 Chairman, Department of Pathology, University of Linköping • 1980-1984 Chairman, Institute of Medical Microbiology and Pathology, University of Linköping • 1983-1984 Researcher, Medical School, University of Linköping • 1985-2002 Professor of Pathology (speciality: Cellular Pathology), University of o Gothenburg (a permanent appointment by governmental decision) and senior physician in Clinical Pathology, Sahlgrenska University Hospital • 1989-1990 Visiting Professor in Cell Biology, Harvard University, Boston, USA • 1992-1996 Chairman, Department of Pathology, University of Gothenburg, Sahlgrenska University Hospital • 1997-2000 Chairman, Institute of Laboratory Medicine, University of o Gothenburg, Sahlgrenska University Hospital • 2002-- Professor Emeritus Pathology, University of Gothenburg