1. Directorate of Research, TORASIF, Calabar 540004, Nigeria
2. Department of Medicine and Surgery, University of Ibadan, Ibadan 200005, Nigeria
3. Faculty of Pharmaceutical Sciences, University of Nigeria Nsukka, Nsukka 410001, Nigeria
4. Faculty of Medical Laboratory Science, University of Calabar, Calabar 540004, Nigeria
5. African Community for Systematic Reviews and Meta-Analyses (ACSRM), Kigali 4285, Rwanda
6. Department of Cardiovascular, Endocrine-Metabolic Diseases and Aging, Istituto Superiore di Sanità, Via Giano della Bella 34, 00162 Rome, Italy