1. DEPARTMENT OF SOCIAL AND HUMANE STUDIES, THE ,,PROF. S. TARNOWSKI” STATE VOCATIONAL UNIVERSITY IN TARNOBRZEG, TARNOBRZEG, POLAND
2. DEPARTMENT OF GERIATRIC NURSING, FACULTY OF HEALTH SCIENCES, MEDICAL UNIVERSITY OF WARSAW, WARSAW, POLAND
3. FACULTY OF HEALTH SCIENCES, JOHN PAUL II ACADEMY OF APPLIED SCIENCES IN BIALA PODLASKA, BIALA PODLASKA, POLAND