D. Harada, H. Asanoi, J. Takagawa, H. Ishise, H. Ueno, Y. Oda, Y. Goso, S. Joho, and H. Inoue, «Slow and Deep Respiration Suppresses Steady-state Sympathetic Nerve Activity in Patients with Chronic Heart Failure: From Modeling to Clinical Application». American Journal of Physiology-Heart and Circulatory Physiology 307, no. 8 (Oct. 2014): H1159–1168.