1. University of Manitoba , Winnipeg, Manitoba , Canada
2. Institute of Tropical Medicine , Antwerp , Belgium
3. Africa Centres for Disease Control and Prevention , Addis Ababa , Ethiopia
4. Division of Cardiology, Department of Medicine, Stellenbosch University and Tygerberg Hospital , Cape Town , South Africa
5. Armauer Hansen Research Institute , Addis Ababa , Ethiopia
6. French reference center for rickettsioses, Q fever and bartonelloses, Institut Hospitalier Universitaire , Marseille , France
7. Kasturba Medical College , Manipal , India