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Yamaguchi K, Miyahara Y, Yakabe K, Kiya T, Nakatomi M, Shikuwa M, Kohno S. Right ventricular impairment in patients with chronic respiratory failure on home oxygen therapy--non-invasive assessment using a new Doppler index. J Int Med Res. 1998 Oct;26(5):239–47. doi: 10.1177/030006059802600503. PMID: 9924708. |