Affiliation: | (1) Department of Orthodontics, Wonkwang University School of Dentistry, USA;(2) Oral Pathology, Wonkwang University School of Dentistry, USA;(3) Department of Microbiology and Immunology, Wonkwang University School of Medicine, USA;(4) Jeil Obstetrics and Gynecology Hospital, 570-749 Iksan, Chonbuk, Korea;(5) Department of Biology, Kyung-Pook, National University, 702-701 Taegu, Korea;(6) Department of Orthodontics, University of Southern California, 90089 Los Angeles, CA |