1. Department of Dermatology; Universidad Autónoma de Nuevo León; Hospital Universitario “Jose E. González”; Monterrey Mexico
2. Facultad de Enfermería; Universidad Autónoma de Nuevo León; Monterrey Mexico
3. Department of Genetics; Universidad Autónoma de Nuevo León; Hospital Universitario “José E. González”; Monterrey Mexico
4. Division of Cancer Research; Medical Research Institute; Ninewells Hospital and Medical School; University of Dundee; Dundee UK