[On the problem of the clinical aspects of croup of viral origin].
D002648:Child; D003440:Croup; D006801:Humans; D007223:Infant; D007827:Laryngitis / Q000821:virology*; D012141:Respiratory Tract Infections / Q000821:virology*; D014777:Virus Diseases
LARYNGITIS/virology; RESPIRATORY TRACT INFECTIONS/virology; VIRUS DISEASES/in infancy and childhood