1. Department of Microbiology, Nnamdi Azikiwe University Teaching Hospital, Nnewi, Nigeria
2. Department of Medical Microbiology and Parasitology, Nnamdi Azikiwe University, Nnewi Campus, Awka, Nigeria
3. Department of Surgery, Nnamdi Azikiwe University Teaching Hospital, Nnewi, Nigeria
4. Department of Medical Microbiology and Parasitology, Nnamdi Azikiwe University, Nnewi Campus, Awka, Nigeria,