title: Methacholine PC20: 1-point formula.
authors.forename: Donald W
authors.initials: DW
authors.lastname: Cockcroft
authors.forename: Beth E
authors.initials: BE
authors.lastname: Davis
mesh_terms: D005541:Forced Expiratory Volume / Q000187:drug effects*; D006801:Humans; D016210:Methacholine Chloride / Q000494:pharmacology*; D012044:Regression Analysis
chemical_list: D016210:Methacholine Chloride