If Harvard has no online access or no print copy, you'll get an option to request the option through Interlibrary Loan. You'll see Harvard's holdings and you can choose to come to the library to scan the article or choose 'Scan & Deliver/Interlibrary' loan to request a copy to be delivered to you. If Harvard has the article in print only, click 'Check Access Options'. If Harvard has online access, follow the View PDF or Online Access link Usually the reference you're looking for will be at the top of the results. You can paste in just the DOI, the whole title and author name, or even the whole citation.

To use HOLLIS, search for the reference with the collection set to the default 'Catalog & Articles'.

HOLLIS may be the better choice as it contains material that is not included in PubMed. You can use either Harvard Library's HOLLIS catalog or PubMed (Make sure you start at the Countway's Web page). To make this efficient, you should make use of Harvard Library tools that either take you to the pdf or automatically give you the option to request a copy through the library's Interlibrary Loan service. You'll still be left with a lot of pdfs to get, and you'll have to work one reference at a time. This will get you a significant fraction of the pdfs without much work at all. In EndNote, Highlight the articles you want and, then, under the References menu, run the Find Full Text function. So, while you can get open access or free pdfs, licensed material won't come down. In this real world however, EndNote is merely good, since Harvard Library's citation linker doesn't work with EndNote.

In a perfect world, EndNote would be great, as it can, theoretically, perform batch downloads for all available pdfs.

Both EndNote and Zotero can fetch some articles for you automatically.

The following steps will make the process of collecting the pdfs more efficient and thorough.

When you've got them all you can upload the pdf files back into Covidence in bulk. If you're using Covidence, you can export the selected records into EndNote or Zotero, as this will make the process easier. What to do? It's a time consuming process, no matter what (hey, you said you wanted to do a systematic review, right?).

You're done with the title and abstract screen and you're faced with a list of dozens or even hundreds of articles you have to retrieve.

Using endnote for systematic review