title: Letter: Pulmonary hypertension in mitral stenosis.
mesh_terms: D006801:Humans; D006976:Hypertension, Pulmonary / Q000209:etiology*; D000860:Hypoxia / Q000150:complications; D008946:Mitral Valve Stenosis / Q000150:complications*; D010100:Oxygen / Q000097:blood; D011655:Pulmonary Embolism / Q000150:complications
chemical_list: D010100:Oxygen