title: One-year aetiological study of nondiphtheritic croup.
mesh_terms: D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007827:Laryngitis / Q000382:microbiology*; D007958:Leukocyte Count; D008297:Male; D009976:Orthomyxoviridae Infections / Q000382:microbiology*; D012136:Respiratory Syncytial Viruses / Q000302:isolation & purification; D012141:Respiratory Tract Infections / Q000382:microbiology*; D018108:Respirovirus / Q000302:isolation & purification