Smoking cessation—but not smoking reduction—improves the annual decline in FEV1 in occupationally exposed workers
Keywords: ترک سیگار; Smoking cessation; Smoking reduction; Airway hyperresponsiveness; FEV1; Occupational exposureFTND, Fagerström test for nicotine dependence; CO, carbon monoxide; MAC, methacholine airway challenge; AHR, airway hyperresponsiveness; DRS, adjusted reciprocal