1. Surgical Specialties and Anesthesiology Department Medical School Sao Paulo State University (UNESP) Botucatu Brazil
2. Barts and The London School of Medicine & Dentistry William Harvey Research Institute Queen Mary University of London London UK
3. Anesthesiology Department (CMA) São Luiz Hospital, Rede D’or São Paulo Brazil
4. Neurology Department Medical School Sao Paulo State University (UNESP Botucatu Brazil