1. University of Salamanca, Salamanca, Spain
2. Department of Physiotherapy, University of Fortaleza, Fortaleza, Brazil
3. Dr. Carlos Alberto Studart Gomes Hospital, Fortaleza, Brazil
4. Gestalt-Therapy Institute of Brasilia, Brazil
5. Catholic University of Brasília, Brazil
6. Respiratory Rehabilitation and Respiratory Division, University Hospital Leuven, Leuven, Belgium
7. Faculty of Kinesiology and Rehabilitation Sciences, Katholieke Universiteit Leuven, Leuven, Belgium