title: Which PEF value is the best?
authors.forename: L J
authors.initials: LJ
authors.lastname: Nannini
mesh_terms: D001249:Asthma / Q000175:diagnosis*; D004636:Emergency Service, Hospital; D005541:Forced Expiratory Volume; D014943:Global Health; D006801:Humans; D010351:Patient Discharge / Q000592:standards*; D010366:Peak Expiratory Flow Rate; D017410:Practice Guidelines as Topic; D012008:Recurrence