Airways reactivity and the need for a simple test.
D001249:Asthma / Q000175:diagnosis; D001985:Bronchial Provocation Tests / Q000379:methods*; D004781:Environmental Exposure; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000139:chemically induced / Q000175:diagnosis; D012130:Respiratory Hypersensitivity / Q000175:diagnosis*