[1] Univ Calif San Francisco, Sch Dent, San Francisco, CA USA
[2] Univ Calif San Francisco, Sch Dent, Dept Orofacial Sci, San Francisco, CA USA
[3] Univ Paris Diderot, Rothschild Hosp, AP HP, Dept Periodontol,UFR Odontol, Paris, France
[4] Univ Paris 05, Fac Dent Surg, Montrouge, France
[5] Nippon Dent Univ Tokyo, Dept Life Sci Dent, Tokyo, Japan
[6] Nippon Dent Univ Tokyo, Sch Life Dent Tokyo, Dept Periodontol, Tokyo, Japan
[7] Sichuan Univ, West China Hosp Stomatol, Natl Clin Res Ctr Oral Dis, State Key Lab Oral Dis,Dept Periodontol, Chengdu, Peoples R China
[8] Univ Estadual Campinas, Inst Biol, Dept Biochem & Tissue Biol, Lab Neuroprote, Campinas, Brazil
[9] Sun Yat Sen Univ, Hosp Stomatol, Guanghua Sch Stomatol, Dept Periodontol, Guangzhou, Peoples R China