Affiliation: | 1. Internal Medicine, Kumamoto Saisyunsou Hospital, 2659, Suya, Koushi, Kumamoto, 861-1196, Japan 2. Shimoda Medical Clinic, 655, Tsuruhata town, Kumamoto City, Kumamoto, 861-5513, Japan 3. Department of Cardiovascular Medicine, Kumamoto University School of Medicine, 1-1-1 Honjo, Kumamoto, 860-8556, Japan
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