Authors
Akihiko Kaji
Private Practice, Tokyo, Japan
Department of Periodontology, The Nippon Dental University, School of Life Dentistry at Tokyo, Japan
Satoshi Sekino
Department of Periodontology, The Nippon Dental University, School of Life Dentistry at Tokyo, Japan
Hiroshi Ito
Department of Periodontology, The Nippon Dental University, School of Life Dentistry at Tokyo, Japan
Yukihiro Numabe
Department of Periodontology, The Nippon Dental University, School of Life Dentistry at Tokyo, Japan