Stage 0: Images or hard copy of original data where available - in many cases this is a link to a third party resource or physical location. (surfacetemperatures.org)
To maximize our ability to use a common framework for variable definition, we also requested original data from all studies published prior to 2008 that met inclusion criteria. (jamanetwork.com)
The first introduces the core issues and concepts that are explored throughout the book as well as a new and original data set on RPGs. (dailyfreebooks.com)