RT - Journal Article T1 - JF - gums-med YR - 1997 JO - gums-med VO - 6 IS - 22 UR - http://journal.gums.ac.ir/article-1-1908-fa.html SP - 0 EP - 0 AB - LA eng UL http://journal.gums.ac.ir/article-1-1908-fa.html M3 ER -