共 28 条
[21]
1988, J OREG DENT ASS, V57, P11
[22]
1988, AGD IMPACT, V16, P21
[23]
1978, JADA, V97, P673
[24]
1988, J KY DENT ASS, V41, P21
[25]
1987, US FED REG 1030
[26]
1987, MMWR, V36, P132
[27]
1988, JADA, V116, P241
[28]
1987, PRACTITIONERS SURVEY