title: Prolonged expiratory apnoea in children.
mesh_terms: D001049:Apnea / Q000209:etiology*; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D012891:Sleep Apnea Syndromes / Q000209:etiology; D014917:Whooping Cough / Q000150:complications*