共 15 条
[2]
COOPER PG, 1983, J PERIODONTOL, V8, P497
[6]
KRISTOFFERSEN T, 1970, Journal of Periodontal Research, V5, P127, DOI 10.1111/j.1600-0765.1970.tb00704.x
[7]
LOE HARALD, 1963, ACTA ODONTOL SCAND, V21, P533, DOI 10.3109/00016356309011240