1. Doctoral School, Faculty of Health Sciences in Katowice, Medical University of Silesia, 40-055 Katowice, Poland
2. Doctoral School, Faculty of Health Sciences in Bytom, Medical University of Silesia, 41-902 Bytom, Poland
3. Department of Psychiatric Rehabilitation, Leszek Giec Upper-Silesian Medical Centre, Medical University of Silesia, 40-055 Katowice, Poland
4. Department and Clinic of Psychiatric Rehabilitation in Katowice, Faculty of Medical Sciences in Katowice, Medical University of Silesia, 40-055 Katowice, Poland