title: Matching or selection bias in the fenoterol studies?
authors.forename: S F
authors.initials: SF
authors.lastname: Lanes
mesh_terms: D001249:Asthma / Q000188:drug therapy* / Q000401:mortality*; D016022:Case-Control Studies; D015986:Confounding Factors, Epidemiologic; D005280:Fenoterol / Q000009:adverse effects*; D006801:Humans; D009520:New Zealand / Q000453:epidemiology; D015983:Selection Bias
chemical_list: D005280:Fenoterol