1. Clinical Department of Internal Diseases, Dermatology and Allergology in Zabrze, Medical University of Silesia, Katowice, Poland
2. Department of Otorhinolaryngology and Laryngological Oncology in Zabrze, Medical University of Silesia, Katowice, Poland
3. Clinical Department of Internal Diseases, Allergology and Clinical Immunology in Zabrze, Medical University of Silesia, Katowice, Poland