title: Retraction Note to: Assessment of neuromuscular block at the orbicularis oris, corrugator supercilii, and adductor pollicis muscles.
authors: Department of Anesthesiology, Yachiyo Medical Center, Tokyo Women's Medical University, 477-96 Owada-Shinden, Yachiyo, Chiba, 276-8524, Japan. ysr311@auone.jp.
authors: Yuhji
authors: Y
authors: Saitoh
authors: Endoscopy Unit, Department of Coloproctological Surgery, Tsujinaka Hospital Kashiwanoha, Chiba, Japan.
authors: Hiroshi
authors: H
authors: Sashiyama
authors: Department Vice Director, Anesthesiology, The Cancer Institute Hospital of Japanese Foundation For Cancer Research, Tokyo, Japan.
authors: Tsutomu
authors: T
authors: Oshima
authors: Department of Anesthesia and Critical Care, Teikyo University School of Medicine, Tokyo, Japan.
authors: Yoshinori
authors: Y
authors: Nakata
authors: Department of Anesthesiology, Yachiyo Medical Center, Tokyo Women's Medical University, Chiba, Japan.
authors: Jiro
authors: J
authors: Sato