So far you've had 1 right answer out of 5.
Select "thumb sucking.mp. search as Keyword" as well as the Subject Heading Fingersucking
Imagine you're doing some research on orthodontics. After typing your term and mapping it to the Subject Heading Orthodontics, you click on the Subject Heading to see its tree:
If you want only to find articles about orthodontics in general, should you EXPLODE
the Subject Heading "Orthodontics"?
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