1. Universidad Autonoma de Nuevo Leon, School of Medicine, Human Anatomy Department, Monterrey, Mexico
2. Instituto Mexicano del Seguro Social, Delegación de Nuevo Leon, Monterrey, Mexico
3. Universidad Autonoma de Nuevo Leon, University Hospital “Dr. Jose Eleuterio Gonzalez”, Traumatology and Orthopedic Surgery Departament, Monterrey, Mexico
4. Universidad Autonoma de Nuevo Leon, School of Medicine, Histology Department, Monterrey, Mexico
5. Ministry of Health of the State of Nuevo Leon, Monterrey, Mexico
6. Universidad Autonoma de Nuevo Leon, University Hospital “Dr. Jose Eleuterio Gonzalez”, Neurosurgery Department, Monterrey, Mexico
7. Universidad Autonoma de Nuevo Leon, University Hospital “Dr. Jose Eleuterio Gonzalez”, Endocrinology, Monterrey, Mexico
8. Universidad Autonoma de Nuevo Leon, School of Medicine and University Hospital “Dr. Jose Eleuterio Gonzalez”, Research Vice-Dean’s Office, Monterrey, Mexico