1. Department of Neurosurgery, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, México City, Mexico,
2. Department of Neurosurgery, Hospital de Especialidades No. 71, Instituto Mexicano del Seguro Social, Torreón, Coahuila, Mexico,
3. Department of Neurosurgery, Kantonsspital St.Gallen, St.Gallen, Switzerland,
4. Department of Pediatric Neurosurgery, Hospital de Pediatría, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, México City, México,
5. President of the Mexican Society of Neurological Surgery, Mexico City, México; Latin American Federation of Neurosurgical Societies, Montevideo, Uruguay; Spine Clinic, The American British Cowdray Medical Center IAP, Mexico City, Mexico; World Federation of Neurosurgical Societies, Nyon, Vaud, Switzerland,
6. Department of Neurosurgery, Hospital 1° de Octubre, ISSSTE, Mexico,
7. Department of Neurosurgery, Instituto Nacional de Neurología y Neurocirugía “Manuel Velasco Suárez”, Mexico,
8. Laboratory of Comparative Cognition, Faculty of Psychology, Universidad Nacional Autonoma de Mexico, Mexico City, Mexico,
9. Graduate School of Neural and Behavioural Sciences, International Max Planck Research School, Tuebingen University, Tuebingen, Germany.