Wikipedia is an encyclopedia and has a distinct style that may take some time getting used to. It is important that articles use the best sources and content is given due weight.Different from scientific papers, Wikipedia medical and health content is preferably sourced to secondary sources over primary sources.Citing a review article is preferred over an original trial.

This is the main directory of WikiProjects and related administration pages on English Wikipedia. Due to the high volume of WikiProjects (over 2,000), this directory has been split into several "sub-directories" based on the projects' scope.You can also use the Special:Search box below to locate WikiProjects and sub-pages.