One feature of Web 1.0 that seemed to change everything about publishing was the ability to make changes to the primary publication at any time.

With the publication of the report on 14 October, WHO hopes to start a global conversation on the effectiveness of primary health care as a way of reorienting national health systems.

Primary objective to avoid selection and publication bias, systematic reviewers should employ a broad range of search techniques and make efforts to locate unpublished studies.