Transcription: So which one should I choose? I've told you about three search engines. Let me give you some advice about selecting one. Use Health A to Z when you're interested in a topic rather than a precise term because it's going to return a list of citations, websites that have been looked at by medical professionals. Use Med Hunt to search for a precise term. It's especially useful when you a good deal about the topic and know what precise terms to use in conducting a search. And use Medical World Search when you want to search on synonyms, search on related terms, or use multiple search engines.