by Ryu, Hwang-Sog, Bae, In-Ho, Lee, Kyung-Gu, Hwang, Hyeon-Shik, Lee, Ki-Heon, Koh, Jeong-Tae, Cho, Jin-Hyoung
Published in The Angle orthodontist (01.01.2012)

by 유황석, 황현식, Ryu, Hwang-Sog, Hwang, Hyeon-Shik
Published in Korean journal of orthodontics (2002)