2000-07-27
The New England journal of medicine
methods, Smoking Cessation, Risk Factors, Oxygen Inhalation Therapy, Oxidative Stress, therapy, physiopathology, genetics, epidemiology, Lung Diseases, Obstructive, metabolism, antagonists & inhibitors, Leukocyte Elastase, Inflammation, Humans, Endopeptidases, therapeutic use, Bronchodilator Agents, Anti-Inflammatory Agents, Anti-Bacterial Agents, Adrenal Cortex Hormones