1. Department and Clinic of Allergology, Clinical Immunology and Internal Diseases, Ludwik Rydygier Collegium Medicum in Bydgoszcz Nicolaus Copernicus University in Toruń, Bydgoszcz, Poland
2. Department of Internal Medicine, Pulmonology, Allergy and Clinical Immunology, Military Institute of Medicine in Warsaw, Warsaw, Poland
3. Department of Internal Medicine, Connective Tissue Diseases and Geriatrics, Medical University of Gdansk, Gdansk, Poland
4. 2nd Department of Internal Medicine, Jagiellonian University Medical College, Krakow, Poland