1. Faculty of Medical Laboratory Sciences University of Khartoum Khartoum Sudan
2. Faculty of Medicine University of Khartoum Khartoum Sudan
3. Molecular Biology Unit Sirius Training and Research Centre Khartoum Sudan
4. Institute of Endemic Disease University of Khartoum Khartoum Sudan
5. Swiss Tropical and Public Health Institute (Swiss TPH) Allschwil Switzerland
6. University of Basel Basel Switzerland