1. Department of Environmental Management, Pan African University Life and Earth Sciences Institute (Including Health and Agriculture), Ibadan, Nigeria
2. Mabibo Traditional Medicine Research Centre, National Institute for Medical Research, Dar Es Salaam, Tanzania
3. Department of Agricultural and Environmental Engineering, University of Ibadan, Ibadan, Nigeria
4. Department of Geography, University of Ibadan, Ibadan, Nigeria
5. Muhimbili Medical Research Centre, National Institute for Medical Research, Dar Es Salaam, Tanzania