1. Department of Cellular Pathology Hospital Universitario El Bierzo Ponferrada Spain
2. Department of Cellular Pathology Hospital de la Reina Ponferrada Spain
3. Research Department. Institute for Biomedical Research of A Coruña (INIBIC) University of A Coruña (UDC) A Coruña Spain
4. Western University of Health Sciences, College of Osteopathic Medicine of the Pacific Pomona California USA
5. Los Angeles Medical Center (LAMC), Southern California Kaiser Permanente Department of Dermatology Los Angeles California USA