1. Department of Electronic Engineering, University of Rome Tor Vergata, via del Politecnico 1, 00133 Roma, Italy
2. Faculty of Medicine and Pharmaceutical Sciences, University of Douala, Carrefour Ange Raphael, Douala P.O. Box 4035, Cameroon
3. Center for Respiratory Diseases, Douala Laquintinie Hospital, Avenue du Jamot, Douala P.O. Box 4035, Cameroon
4. Interdepartmental Centre for Volatilomics “A D’Amico”, University of Rome Tor Vergata, via del Politecnico 1, 00133 Roma, Italy
5. UniCamillus, Saint Camillus International University of Health and Medical Sciences, 00131 Rome, Italy
6. Department of Chemical Science and Technology, University of Rome Tor Vergata, via della Ricerca Scientifica, 00133 Rome, Italy
7. Internal Medicine Service, Douala General Hospital, Douala P.O. Box 4856, Cameroon
8. Department of Biomedicine and Prevention, University of Rome “Tor Vergata”, Viale Montpellier 1, 00133 Roma, Italy