
Urban Residence Is Associated With Bronchial Hyperresponsiveness in Italian General Population Samples
Keywords: متاکولین; bronchial responsiveness; epidemiology; general population; methacholine; risk factors; urbanANOVA, analysis of variance; BHR, bronchial hyperresponsiveness; BR, bronchial responsiveness; CI, confidence interval; CNR, National Research Council; MCT, metha