1. Department of Clinical Pharmacology, Faculty of Pharmacy, Wrocław Medical University, ul. Borowska 211a, 50-556 Wrocław, Poland
2. Department and Clinic of Pediatric Oncology, Hematology and Bone Marrow Transplantation, Wrocław Medical University, Borowska 213, 50-556 Wrocław, Poland
3. Gilead Sciences Poland Sp. z o.o., ul. Postepu 17A, 02-676 Warsaw, Poland