Unexpected control-group behaviour in an intervention study.
Anttila
S
S
Isokoski
M
M
D000368:Aged; D001519:Behavior; D002986:Clinical Trials as Topic / Q000379:methods*; D005260:Female; D006299:Health Services for the Aged / Q000706:statistics & numerical data; D006801:Humans; D008297:Male