Repeatability of cough-related variables during fog challenges at threshold and suprathreshold stimulus intensity in humans
GA Fontana, T Pantaleo, F Lavorini, NM Maluccio, D Mutolo, M Pistolesi
European Respiratory Journal 1999 13: 1447-1450; DOI: 10.1034/j.1399-3003.1999.13f34.x