Takano Ken-ichi, Yamamoto Motohisa, Kondo Atsushi, Himi Tetsuo
Department of Otolaryngology, Sapporo Medical University School of Medicine, Sapporo, Japan.
Otolaryngol Head Neck Surg. 2009 Sep;141(3):430-1. doi: 10.1016/j.otohns.2009.02.027. Epub 2009 May 5.