1. Department of Nursing ScienceHirosaki University Graduate School of Health ScienceHirosakiJapan
2. Department of Hypertension and Stroke Internal MedicineHirosaki University Graduate School of MedicineHirosakiJapan
3. Daiichi Sankyo Co., Ltd., Biologics Technology Research Laboratories Group1Pharmaceutical Technology Division, 2716–1Kurakake, Akaiwa, Chiyoda‐machi, Oura‐gunGunmaJapan
4. Department of CardiologyHirosaki University Graduate School of MedicineHirosakiJapan
5. Division of CardiologySaiseikai Kumamoto HospitalKumamotoJapan