1. Department of Internal Medicine, Arnavutkoy State Hospital, Istanbul, Turkey
2. Faculty of Medicine, Department of Hematology, Bezmialem Vakif University, Istanbul, Turkey
3. Faculty of Medicine. Department of Neurology, Beykent University, Istanbul, Turkey
4. Department of Internal Medicine, Health Science University, Bakırkoy Dr. Sadi Konuk Training and Research Hospital, Istanbul, Turkey
5. Department of Internal Medicine, Health Sciences University, Istanbul Kanuni Sultan Süleyman Research and Education Hospital, Istanbul, Turkey
6. Neurology Clinic, Bahcelievler Memorial Hospital, Istanbul, Turkey