From the *Department of Anesthesiology, Gunma University Graduate School of Medicine, Maebashi, Japan
Departments of †Anesthesiology, Respiratory Center, Kumagaya, Japan.
‡Surgery, Cardiovascular Division, Saitama Prefectural Cardiovascular and Respiratory Center, Kumagaya, Japan.
Accepted for publication January 29, 2018.
The authors declare no conflicts of interest.
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Address correspondence to Masataka Kuroda, MD, PhD, Department of Anesthesiology, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi 8511, Japan. Address e-mail to email@example.com.