Gastroenterology Department;
Hospital de Cabue?es;
Gastroenterology Department;
Hospital Universitario Central de Asturias (HUCA);
Respiratory Department;
Hospital Universitario Central de Asturias (HUCA);
Department of Microbiology and Biochemistry of Dairy Products;
Instituto de Productos Lácteos de Asturias-Consejo Superior de Investigaciones Científicas (IPLA-CSIC);