1. Department of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, Poland
2. Division of Nervous System Diseases, Department of Clinical Nursing, Faculty of Health Science, Wroclaw Medical University, Poland
3. Department of Internal Medicine, 4th Military Teaching Hospital, Wrocław, Poland
4. Division of Oncology and Palliative Care, Department of Clinical Nursing, Faculty of Health Science, Wroclaw Medical University, Wroclaw, Dolnoslaskie, Poland
5. Department of Surgery, 4th Military Teaching Hospital, Wroclaw, Poland