1. Faculty of Medicine of Sfax, Avenue Majida Bouleila, Sfax 3029, Tunisia
2. Physiological Investigations, Habib Bourguiba University Hospital, Route de L’Ain, Sfax 3000, Tunisia
3. Ibn Oumrane Psychiatry Department, Razi University Hospital, Manouba, Tunisia
4. Faculty of Medicine, Tunis El Manar University, Tunis, Tunisia
5. Pain Treatment Center, La Rabta, Rue Jbel Lakhdar, La Rabta Jebbari, Tunis 1007, Tunisia