Takahashi Masahiko, Yoshida Akiko, Ohara Takeshi, Yamanaka Hiroyuki, Yamamoto Yoko, Toraiwa Satoshi, Nakaho Toshimichi, Yamamuro Makoto
Division of Pain Control, Department of Anesthesiology and Emergency Medicine, Tohoku University Postgraduate Medical School, 1-1 Seiryo, Aoba-ku, Sendai 980-8574, Japan.
J Anesth. 2003;17(3):196-8. doi: 10.1007/s00540-003-0171-y.