Adding References to Covidence
To upload your references into Covidence, navigate to your review in Covidence, and click Import references.
In the drop-down menu below Import in to, select 
the folder where you would like the citations to
go (Screen).
If importing directly from a database or website, select the Source or click Manage sources to add one to the list. This setting is optional but will enable Covidence to list the databases in your Prisma flow diagram.
Browse to the RIS, PubMed TXT, or Endnote XML file you would like to upload and attach it, then click Import.
It may take some time, but you should see your citations appear in your systematic review on Covidence within the next few minutes.
Undoing your Import
If you want to reverse an import, you can do so as long as you have not screened any articles from that import.
In the import menu, select Import History.
Each file you import will be listed. If you have not screened articles from this import, you will see an Undo this import button. Clicking the button will remove the entire import from the review. If you have already screened articles, you will see a Check Duplicates button instead. Imports cannot be undone at this stage.
