title: A clinical and investigative study of spontaneous pneumothorax in adults.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000150:complications; D008297:Male; D008875:Middle Aged; D011030:Pneumothorax / Q000175:diagnosis / Q000209:etiology*; D011446:Prospective Studies; D012907:Smoking; D014397:Tuberculosis, Pulmonary / Q000150:complications