MEDLINE <1996 to the present> Now we are ready to apply to our search what we have learned about combining. We know that we want the correlation between estrogen replacement therapy AND heart diseases, so we should combine these concepts using the boolean AND. In BUMC MEDLINE Plus/OVID, we combine using the set numbers. In this case, we will combine 1 and 2. There are two ways to combine: We can combine by using the menu option at the top of the page. Or, we can combine sets by typing 1 and 2 in the "Enter keyword or phrase" box. # Search History Results Display 1 *estrogen replacement therapy/ 3200 2 exp *heart diseases/ 98882   Let's combine the sets: Type 1 and 2 in the "Enter keyword or phrase" box below, then press the PERFORM SEARCH button to continue. Enter Keyword or phrase: Map Term to Subject Heading Limit to: Ovid Full Text Available Human English Language Review Articles Abstracts Local Holdings EBM Reviews Latest Update Publication Year -196319641965196619671968196919701971197219741975197619771978197919801981198219831984198519861987198819891990199119921993199419951996199719981999200020012002--200220012000199919981997199619951994199319921991199019891988198719861985198419831982198119801979197819771976197519741972197119701969196819671966196519641963

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