1. Alfa Institute of Biomedical Sciences, Athens, Greece
2. Laboratory of Pharmacokinetics and Toxicology, Department of Pharmacy, 401 General Military Hospital, Athens, Greece
3. Department of Internal Medicine, Hospital Neuwittelsbach of the Sisters of Mercy, Munich, Germany
4. Department of Medicine, Henry Dunant Hospital Center, Athens, Greece
5. Department of Medicine, Tufts University School of Medicine, Boston, MA, USA