[1] Tokyo Med & Dent Univ, Grad Sch, Dept Maxillofacial Prosthet, Bunkyo Ku, Tokyo 1138549, Japan
[2] Tokyo Med & Dent Univ, Grad Sch, Dept Plast & Reconstruct Surg, Tokyo 1138549, Japan
[3] Tokyo Med & Dent Univ, Grad Sch, Dept Head & Neck Surg, Tokyo 1138549, Japan