Department of Oncology and Internal Medicine;
Loandjili General Hospital;
Pointe-Noire;
Congo;
Medical Oncology Department;
Teaching Hospital of Brazzaville;
Brazaville;
Congo;
Hospital General Edith Lucie Bongo;
Brazaville;
Congo;
Breast Cancer; CHEMOTHERAPY; Hematological Toxicity; Congo Brazzaville;