[1] Univ Iowa Hosp & Clin, Dept Surg, Div Plast & Reconstruct Surg, Iowa City, IA 52242 USA
[2] Univ Tokyo, Grad Sch Med, Dept Plast & Reconstruct Surg, Bunkyo Ku, Tokyo 113, Japan
[3] Univ Iowa Hosp & Clin, Dept Otolaryngol, Div Head & Neck Surg, Iowa City, IA 52242 USA