title: Time for standardization.
authors.forename: Peter D
authors.initials: PD
authors.lastname: Bridge
authors.forename: Sheila A
authors.initials: SA
authors.lastname: McKenzie
mesh_terms: D000403:Airway Resistance / Q000187:drug effects*; D001993:Bronchodilator Agents; D002648:Child; D002675:Child, Preschool; D006801:Humans; D012015:Reference Standards; D012129:Respiratory Function Tests / Q000592:standards*
chemical_list: D001993:Bronchodilator Agents