1. Department of Infectious Diseases, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
2. Department of Infectious Diseases, Aberdeen Royal Infirmary, Aberdeen, Scotland
3. Närhälsan, Research and Development Primary Health Care, Research and Development Centre Södra Älvsborg, Region Västra Götaland, Sweden
4. Department of Public Health and Community Medicine/Primary Health Care, Institute of Medicine, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
5. Department of Infectious Diseases, Skaraborg Hospital, Skövde, Sweden