| Affiliation: | 1. Department of Dermatology, Venereology and Pediatric Dermatology, Medical University of Lublin, Radziwiłłowska 13, 20-080 Lublin, Poland;2. Department of Rheumatology and Internal Medicine, Medical University of Białystok, Skłodowskiej-Curie 24a, 15-276 Białystok, Poland;3. Faculty of Internal Medicine, Ghent University, Belgium;4. Research Laboratory and Academic Division of Clinical Rheumatology, Department of Internal Medicine, University of Genoa, Genoa, Italy;1. Missouri University of Science and Technology, Department of Mathematics and Statistics, Rolla, MO 65409-0020, USA;2. Cairo University, Department of Engineering Mathematics, Faculty of Engineering, Orman, Giza 12221, Egypt;3. Gaziosmanpaşa University, Department of Mathematics, Faculty of Arts and Sciences, Tokat 60240, Turkey |
