1. PhD Department of Health Sciences, Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru
2. Postgraduate Department, Change Research Working Group, Faculty of Health Sciences, Universidad Científica del Sur, Lima, Peru
3. Natural Sciences Laboratory, Faculty of Health Sciences, Universidad Científica del Sur, Lima, Peru
4. Academic Department, Universidad Nacional Federico Villarreal, Lima, Peru
5. Academic Department of Rehabilitative Stomatology, Faculty of Dentistry, Universidad Nacional Mayor de San Marcos, Lima, Peru