1. Central Hospital, Växjö, SwedenCurrent affiliation: Centers for Disease Control and Prevention, Atlanta, Georgia, USA
2. Kalmar County Hospital, Kalmar, Sweden
3. Kalmar University, Kalmar, Sweden
4. Central Hospital, Växjö, Sweden
5. Central Hospital, Växjö, SwedenUppsala University, Uppsala, Sweden
6. Kalmar University, Kalmar, SwedenUppsala University, Uppsala, Sweden