This database contains bibliographic reference to papers that have been included in the first phase of the study. This comprised a literature review including a comprehensive search of electronic databases and sources of "grey" literature. After screening for relevance, over 220 papers were included in the review. Each of these papers were systematically coded according to a range of categories, including country of origin, target group and whether the lay person received payment.
By searching the database you can get lists of references that fall into one or more of these categories, and if you wish you can access the full data extraction sheet for each paper. You can also search by author, year or title if you are looking for a specific reference.