Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kato Mahoto and Komamura Kazuo and Kitakaze Masafumi,"Tiotropium, a Novel Muscarinic M3 Receptor Antagonist, Improved Symptoms of Chronic Obstructive Pulmonary Disease Complicated by Chronic Heart Failure(Letter to the Editor)",Circulation journal : official journal of the Japanese Circulation Society,13469843,Japanese Circulation Society,2007-04-20,71,5,802-803,https://cir.nii.ac.jp/crid/1570572702335708032,