1. Health and Research Science Management, Pediatric Orthopedic Surgery, Division of Plastic and Reconstructive Surgery, Hospital de Traumatología y Ortopedia No. 21, Instituto Mexicano del Seguro Social (IMSS), Monterrey, NL, Mexico
2. Health Science Division, Vice-rectory of Health Science, Universidad de Monterrey, San Pedro Garza Garcia, NL, Mexico
3. Coordination of the Doctorate of Medical Sciences, Universidad Juárez del Estado de Durango, Durango, Durango, Mexico
4. Monterrey Regional Hospital ISSSTE, Monterrey, NL, Mexico.