As CDISC organization, I want the SDTM Dataset Specialization data model to include an attribute for storing the data source

[OGarcia11]

Description

• As CDISC organization, I want the SDTM Dataset Specialization revised data model to include an attribute for storing the data source so I can track where content came from, e.g., CDISC Curation Team or a specific external source such as GSK, Novo Nordisk, etc.