1. WHO Collaborating Centre for Vaccine Safety, Santiago de Compostela, Spain
2. Vaccines Unit, Preventive Medicine and Public Health Department, Vital Álvarez-Buylla Hospital, Health Care Service of Asturias, Mieres, Spain
3. Genetics, Vaccines and Pediatric Infectious Diseases Research Group (GENVIP), Instituto de Investigación Sanitaria de Santiago and Universidad de Santiago de Compostela (USC), Santiago de Compostela, Spain
4. Translational Pediatrics and Infectious Diseases, Hospital Clínico Universitario and Universidad de Santiago de Compostela (USC), Santiago de Compostela, Spain
5. Digestive Surgery Service, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, Spain