Affiliation: | 1. Infectious Diseases, Galdácano Hospital, Vizcaya, Spain;2. Biochemistry and Molecular Biology, Oviedo University School of Medicine, Oviedo, Spain;3. Infectious Diseases, Hospital Universitario Central de Asturias (HUCA), Oviedo University School of Medicine, Oviedo, Spain;4. Infectious Diseases, Cabue?es Hospital, Gijón, Spain |