[1] Seoul Natl Univ, Sch Dent, Dept Oral & Maxillofacial Surg, Seoul 03080, South Korea
[2] Hallym Univ, Sacred Heart Hosp, Coll Med, Dept Oral & Maxillofacial Surg,Dent, Anyang 14068, South Korea
[3] Hallym Univ, Grad Sch Clin Dent, Chunchon 24252, South Korea
[4] Korea Univ, Guro Hosp, Dept Oral & Maxillofacial Surg, Dent, Seoul 08308, South Korea
[5] Seoul Natl Univ, Dent Hosp, Oral Canc Ctr, Seoul 03080, South Korea
[6] Seoul Natl Univ, Dent Hosp, Clin Trial Ctr, Seoul 03080, South Korea
[7] Seoul Natl Univ, Dent Res Inst, Sch Dent, Seoul 03080, South Korea
[8] Seoul Natl Univ, Dent Hosp, Clin Translat Res Ctr Dent Sci, Seoul 03080, South Korea