1. Department of Pharmaceutics and Pharmacy Practice Muhimbili University of Health and Allied Sciences Dar es Salaam Tanzania
2. Department of Epidemiology and Biostatistics, School of Public Health and Social Sciences Muhimbili University of Health and Allied Sciences Dar es Salaam Tanzania
3. Department of Community Medicine Muhimbili University of Health and Allied Sciences Dar es Salaam Tanzania
4. Department of Microbiology and Parasitology, School of Medicine and Dentistry University of Dodoma Dodoma Tanzania
5. Department of Pharmaceutical Microbiology, School of Pharmacy Muhimbili University of Health and Allied Sciences Dar es Salaam Tanzania