1. Department of Neurosurgery, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
2. Department of Vascular Neurosurgery, National Institute of Neurology and Neurovascular Diseases, 077160 Bucharest, Romania
3. Department of Neurosurgery, Dunarea de Jos University, 800010 Galati, Romania
4. Department of Neurosurgery, Clinical Emergency Hospital “Prof. Dr. Nicolae Oblu”, 700309 Iasi, Romania
5. Neurosurgery Department, Sanador Clinical Hospital, 010991 Bucharest, Romania