title: Hamman-Rich syndrome. A disease of unknown or multiple causes.
mesh_terms: D004781:Environmental Exposure; D006801:Humans; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases; D011030:Pneumothorax / Q000209:etiology; D011658:Pulmonary Fibrosis / Q000209:etiology*; D014934:Wood