1. Department of Internal Medicine, Joseph Raseta Befelatanana Hospital, Antananarivo, Madagascar
2. Oncology Department, Professeur Zafisaona Gabriel Hospital, Mahajanga, Madagascar
3. Oncology Department, Joseph Ravoahangy Andrianavalona Hospital, Antananarivo, Madagascar
4. Department of Internal Medicine, Mahavoky Atsimo Hospital, Mahajanga, Madagascar
5. Faculty of Medicine, Antananarivo, Madagascar