Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) CHOI SH,Effect of recombinant human bone morphogenetic protein-2/absorbable collagen sponge (rhBMP-2/ACS) on healing in 3-wall intrabony defects in dogs,J Periodontol,,,2002,73,,63-72,https://cir.nii.ac.jp/crid/1573668926008723584,