1. Astellas Pharma US, Northbrook, IL 60062, USA
2. Advocate Christ Medical Center & Hope Children’s Hospital, 4440 W 95th Street Oak Lawn, IL 60453, USA
3. Department of Rheumatology, University Medical Center-Ljubljana, 1000 Ljubljana, Slovenia
4. Departments of Medicine, Pharmacology, Biochemistry and Radiation Oncology, The University of Mississippi Medical Center, Cancer Institute, Jackson, MS 39216, USA
5. Sanofi-Aventis, Bridgewater Township, NJ 08807, USA
6. Faculty of Mathematics, Natural Science and Information Technology, University of Primorska, 6000 Koper, Slovenia