SOCIEDADE EUROPEIA DE VIROLOGIA CLÍNICA
DIRECÇÃO GERAL DE SAÚDE
INSTITUTO NACIONAL DE SAÚDE DOUTOR RICARDO JORGE
EUROPEAN CENTRE FOR DISEASE PREVENTION AND CONTROL
ORGANIZAÇÃO MUNDIAL DE SAÚDE
CENTERS FOR DISEASE CONTROL AND PREVENTION
FOOD AND DRUG ADMINISTRATION
PUBLIC HEALTH ENGLAND
NATIONAL INSTITUTES OF HEALTH