1. Department of Oral and Maxillofacial Surgery, Hospital Central “Dr. Ignacio Morones Prieto”, San Luis Potosí, México
2. Department of Pediatrics, Hospital Central “Dr. Ignacio Morones Prieto”, San Luis Potosí, México
3. Pediatric Dentistry Postgraduate Program, Facultad de Estomatología, Universidad Autónoma de San Luis Potosí, México