1. Department of Physical Medicine and Rehabilitation, Hospital Center of Vila Nova de Gaia – Espinho, R. Dr. Francisco Sá Carneiro 4400-129, 4430-999, Vila Nova de Gaia, Portugal
2. Department of Physical Therapy, Robbins College of Health and Human Sciences, Baylor University, Waco, TX, USA
3. School of Health Sciences and , University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal