1 Center for Advanced Studies in Medical Education and Training, Faculty of Medicine, Agostinho Neto University, Luanda 243, Angola. Electronic address: mauer.goncalves@lmc.co.ao.
2 Center for Advanced Studies in Medical Education and Training, Faculty of Medicine, Agostinho Neto University, Luanda 243, Angola; Cardiology Department, Hospital Militar Principal Instituto Superior, Luanda, Angola.
3 Cancer Cytogenomic Laboratory, Center for Research and Drug Development, Federal University of Ceara, Fortaleza, Brazil; Post-Graduate Program of Pathology and Post-Graduate Program of Translational Medicine, Federal University of Ceara, Fortaleza, Brazil.