1. Endocrinology Unit Central Hospital of Army Algiers Algeria
2. Glasgow University School of Medicine Glasgow UK
3. Critical Care Unit Central Hospital of Army Algiers Algeria
4. Neurosurgery Unit Central Hospital of Army Algiers Algeria
5. Nuclear Medicine Unit Central Hospital of Army Algiers Algeria
6. Neurosurgery Unit Salim Zemirli Hospital Algiers Algeria
7. Critical care Unit Salim Zemirli Hospital Algiers Algeria