1. Pharmacy Department, Faculty of Medicine, University of Antananarivo, Antananarivo, Madagascar
2. Applied Pharmacognosy Laboratory, Institut Malgache de Recherches Appliquées, Antananarivo, Madagascar
3. Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, Turin, Italy
4. Department of Environmental Biology, Sapienza University of Roma, Rome, Italy