How to search           [ filling in the form ]     [ boolean operators ]  

 

 
Filling in the form

Type a word or term and select the field where it should be searched.

If you wish, select it by consulting the indexes made available in all search fields. To open a specific index, select the field and click on "index".

To type more than one word in the same line, it is necessary to use a boolean operator so as to relate one to the other (example 1). Use lines 1, 2 and 3 to search more than one word and/or in different fields (example 2).

The symbol $ is a truncation resource for retrieval. Type $ after a root of a word to retrieve all the words which have this root.
Example : educa$ will retrieve terms like: educator, education.

Click on "Search" to start the search.

   
Example 1 Search    in the field
1 hepatitis b or hepatitis c Subject descriptor

 

Example 2 Search  in the field
1 hepatitis Words

2

and hepatic cirrhosis Subject descriptor

3

or English Language
Boolean operators When there is more than one word or term in the same line, or from one line to the other, they must be separated by a boolean operator in order to be related one to the other.
   
operator

example

function

and hepatitis b and hepatic cirrhosis retrieves articles about topics hepatitis b and hepatic cirrhosis, obligatorily related.
or hepatitis b  or hepatitis c retrieves articles about topics hepatitis b and/or the topic hepatitis c, not necessarily both topics in the same article.
and not arrhythmia/co and not myocardial infarct retrieves articles about arrhythmia complications eliminating the articles about myocardial infarct.