1. Nephrology Department, Dr. Negrin University Hospital, Las Palmas de Gran Canaria University, Barranco de la Ballena s/n, 35010 Las Palmas de Gran Canaria, Spain
2. Nephrology Department, University Hospital Materno-Insular, Spain
3. Pathology Department, Dr. Negrin University Hospital, Las Palmas de Gran Canaria University, Barranco de la Ballena s/n, 35010 Las Palmas de Gran Canaria, Spain