1. DESCRIPTION OF THE DATA FIELD:

Variable size

Automatically filled

2. DEFINITION OF DATA ELEMENT:

Automatic unique code derived from the Identification Number field, preceded by the code of the Cooperating Center.

3. NOTES:

a) Internal control field of BIREME used for identification and retrieval of the record in the source database.

b) Internal control field of BIREME generated in the process of data collection or migration of databases.

c) Used for searching by original ID in the integrated search interface and in the bibliographic databases management system.

4. EXAMPLES:

a) VE1.1-450

b) BR67.1-491