1 University of L'Aquila, Department of Life, Health and Environmental Sciences, San Salvatore Hospital, Building Delta 6-Unit of Dentistry, V.le San Salvatore, L'Aquila 67100, Italy.
2 I.A.P.N.O.R.-International Academy of Posture and Neuromyofascial Occlusion Research, Viale Gino Moretti 37, 63074 San Benedetto del Tronto (AP), Italy.
3 Division of Translational Oral Biology, School of Dental Medicine, State University of New York, Stony Brook, New York, NY 14214, USA.