1. Department of Medical Microbiology and Parasitology, College of Medicine, University of Lagos, Lagos, Nigeria
2. Department of Medical Microbiology, School of Medicine, College of Medical Sciences, University of Benin, Benin City, Nigeria
3. Department of Medical Microbiology, University of Benin Teaching Hospital, Benin City, Nigeria
4. Department of Medical Microbiology and Parasitology, Lagos University Teaching Hospital, Idi-Araba, Lagos, Nigeria