1. Medilab Sp. z o. o., Niedzwiedzia 60, 15-531 Bialystok, Poland
2. Clinical Research Centre, Medical University of Bialystok, Jana Kilinskiego 1, 15-089 Bialystok, Poland
3. Department of Pediatric Infectious Diseases, Medical University of Bialystok, Waszyngtona 17, 15-274 Bialystok, Poland