Combining search terms using Boolean operators   

Now, you have the keywords and MeSH terms to search for the relevant articles. You need to use the Boolean Operators (AND, OR, NOT) to combine them:

combining search2
combining search
 

Please drag the Boolean operators and drop them into the correct boxes below:

 

( baby  infant  "infant"[MeSH] )  
( "needle size"  "long needle"  "short needle"  needle  "needles"[MeSH] )  
 ( "local reaction"  swelling  "Injection Site Reaction"[MeSH] )
 

OR   AND   NOT

 

*The terms for I and O concepts were combined as they are the same type of intervention.