Piccirillo J F, Stewart M G, Gliklich R E, Yueh B
Department of Otolaryngology-Head and Neck Surgery, Washington University School of Medicine, St. Louis, MO 63110, USA.
Otolaryngol Head Neck Surg. 1997 Oct;117(4):380-7. doi: 10.1016/S0194-5998(97)70130-X.