1 Section of Immigrant Medicine, Department of Infectious Diseases, University Hospital Hvidovre, DK-2650, Hvidovre, Denmark.
2 Infection and Immunity, St. George's, University of London, London, UK.
3 Division of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, UK.
4 Department of Clinical Microbiology, University Hospital Hvidovre, DK-2650, Hvidovre, Denmark; Research Centre for Migration, Ethnicity and Health, University of Copenhagen, Copenhagen, Denmark.
5 Section of Immigrant Medicine, Department of Infectious Diseases, University Hospital Hvidovre, DK-2650, Hvidovre, Denmark; Research Centre for Migration, Ethnicity and Health, University of Copenhagen, Copenhagen, Denmark. Electronic address: mano@sund.ku.dk.