, Suzanne Hurd, P Calverley, Edmund C Jenkins, A Buist, R Pauwels
2001-03-31
American journal of respiratory and critical care medicine
prevention & control, Bronchodilator Agents, adverse effects, Smoking, Severity of Illness Index, Risk Factors, Research, Practice Guidelines as Topic, therapy, physiopathology, pathology, etiology, epidemiology, economics, diagnosis, classification, Lung Diseases, Obstructive, Humans, Emergencies, Diagnosis, Differential, therapeutic use