共 21 条
[1]
Brunelle J A, 1990, J Dent Res, V69 Spec No, P723
[2]
BURT BA, 1989, J PUBLIC HLTH DENT, V49, P249
[6]
FLEISS JL, 1981, STATISTICAL METHODS, P143
[7]
Graves R C, 1985, J Can Dent Assoc, V51, P693