1. Molecular
Sciences Institute,
School of Chemistry, University of the Witwatersrand, P.O. Wits 2050, Johannesburg, South Africa
2. Biosciences, Council for Scientific and Industrial Research, Pretoria, South
Africa
3. Chemistry Department, University of Dar es Salaam, DUCE, P.O. Box 2329, Dar
es Salaam, Tanzania
4. InPheno AG, Vesalgasse 1, CH-4051, Basel, Switzerland,
and Department of Biomedicine, University of Basel, Switzerland
5. Department
of Traditional Medicine
Research, National Institute for Medical Research, P.O. Box 9653, Dar es Salaam, Tanzania
6. Tanga Aids Working Group, P.O. Box 1374, Tanga, Tanzania
7. Department of Botany, College of Natural
and Applied Sciences, University of Dar es Salaam, P.O. Box 35060, Dar es Salaam, Tanzania