[\'Centro de Vacunación y Salud Internacional, Organismo Autónomo Madrid Salud, Madrid, Spain.\', \'Servicio de Medicina Preventiva del Hospital Clinic de Barcelona, Barcelona, Spain.\', \'Medical Affairs, MSD, Madrid, Spain.\']
Knowledge, attitudes, beliefs and barriers of healthcare professionals and adults ≥ 65 years about vaccine-preventable diseases in Spain: the ADult Vaccination drIverS and barriErs (ADVISE) study.