共 13 条
[1]
ALLAN LD, 1980, BRIT HEART J, V44, P444
[5]
Statistics review 8: Qualitative data - tests of association
[J].
CRITICAL CARE,
2004, 8 (01)
:46-53
[7]
HOFFMAN JIE, 1995, PEDIATR CARDIOL, V16, P155