1. Federal Teaching Hospital Ido‐Ekiti Nigeria
2. University College Hospital Ibadan Nigeria
3. ObafemiAwolowo University Teaching Hospital Complex Ile Ife Nigeria
4. Federal Teaching Hospital Gombe Nigeria
5. Teesside University, Middlesbrough Tees Valley UK
6. Federal Medical Centre Abeokuta Nigeria
7. Federal Medical Centre Katsina Nigeria
8. Ahmadu Bello Teaching Hospital Zaria Nigeria
9. Federal Medical Centre Yenagoa Nigeria