Reiko Furugen, Hideaki Hayashida, Koji Kawasaki, Masayasu Kitamura, Takahiro Iwasaki, Toshiyuki Saito, Takahiro Maeda. Association of the Serum IgG level Against Periodontal Bacteria with Periodontal Status and Serum Lipid Levels. Journal of Men's Health. 2018. 14. 4. e11-e17