共 21 条
[2]
BONE L B, 1987, Orthopaedic Transactions, V11, P87
[4]
DENIS F, 1984, CLIN ORTHOP RELAT R, P65
[5]
GAINES RW, 1983, ORTHOP T, V7, P15
[9]
INTRODUCTION TO SAMPLE-SIZE DETERMINATION AND POWER ANALYSIS FOR CLINICAL-TRIALS
[J].
CONTROLLED CLINICAL TRIALS,
1981, 2 (02)
:93-113