title: When asthma diagnosis becomes a challenge.
authors.forename: M
authors.initials: M
authors.lastname: Contoli
authors.forename: A
authors.initials: A
authors.lastname: Papi
mesh_terms: D001249:Asthma / Q000175:diagnosis* / Q000453:epidemiology; D001980:Bronchi / Q000473:pathology; D001985:Bronchial Provocation Tests / Q000592:standards; D003937:Diagnosis, Differential; D017048:Health Care Costs; D006801:Humans; D008171:Lung Diseases / Q000175:diagnosis; D015995:Prevalence; D015272:Pulmonary Medicine / Q000379:methods*; D012306:Risk