#25 #24 AND [humans]/lim AND [embase]/lim AND [2008‐2012]/py

#24 #8 AND #12 AND #23

#23 #21 AND #22

#22 'breast cancer screening'

#21 #18 OR #20

#20 #18 AND #19

#19 #15 OR #16 OR #17

#18 #13 OR #14

#17 'breast'/de OR breast AND ultrasonograph*

#16 'breast ultrasonography'/exp OR 'breast ultrasonography'

#15 'ultrasonography'/exp OR ultrasonography

#14 mammograph*

#13 'mammography'/exp OR mammography

#12 #9 OR #10 OR #11

#11 'breast cancer risks'

#10 'breast cancer risk'

#9 'breast neoplasm'

#8 #1 OR #2 OR #3 OR #4 OR #5 OR #6 OR #7

#7 groups:ab

#6 trial:ab

#5 randomly:ab

#4 placebo:ab

#3 randomi*ed:ab

#2 controlled AND clinical AND trial

#1 randomised AND controlled AND trial