共 36 条
[2]
Bero LA, 1998, BMJ-BRIT MED J, V317, P465
[6]
Brown JP, 2002, CAN MED ASSOC J, V167, pS1
[10]
CONSORT statement: extension to cluster randomised trials
[J].
BMJ-BRITISH MEDICAL JOURNAL,
2004, 328 (7441)
:702-708