LILACS Methodology Field:

• Field 724 DOI Number

Guidelines:

The Digital Object Identifier (DOI) is a standard for identifying documents in computer networks such as the Internet.

     1. a) The DOI number appears at the very beginning of the scientific article.
     2. b) Only one DOI number is recorded for each article. As it is a unique identifier, there must not be more than one.
     3. c) Do not include the full URL, only the code.