Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) JOHANSSON CB,Bone-tissue formation and integration of titanium implants : an evaluation with newly development enzyme and immunohistochemical techniques,Clin Implant Dent Relat Res,,,1999,1,,33-40,https://cir.nii.ac.jp/crid/1571980074236752384,