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Kim, Young Kyun; Kim, Jong Hwa; Yi, Yang Jin; Kwon, Min Jung; Yun, Pil Young
International Journal of Periodontics and Restorative Dentistry, Vol.35 No.2, pp.271-276
Ryoo, Keun-Soo; Kim, Pil-Jong; Kim, Sungtae; Cho, Young-Dan; Ku, Young
Journal of Periodontal & Implant Science, Vol.53 No.6, pp.444-452