1. Department of Neurology; Assiut University Hospital; Egypt
2. Department of Anesthesiology; Assiut University Hospital; Egypt
3. Anesthesia, Intensive Care and Pain Management; South Egypt Cancer Institute; Assiut University; Egypt
4. Department of Prevention; Health Psychology and Neurorehabilitation; SRH University; Riedlingen Germany
5. Department of Psychiatry and Psychotherapy; University Clinic Tübingen; Germany