Letter: Blood-groups and susceptibility to infection with respiratory agents.
D000017:ABO Blood-Group System; D000257:Adenoviridae Infections / Q000235:genetics / Q000382:microbiology; D002662:Child Health Services; D002675:Child, Preschool; D006566:Herpesviridae Infections / Q000235:genetics / Q000382:microbiology; D006801:Humans; D007223:Infant; D009976:Orthomyxoviridae Infections / Q000235:genetics / Q000382:microbiology; D012141:Respiratory Tract Infections / Q000235:genetics* / Q000382:microbiology
D000017:ABO Blood-Group System