The following journal articles and books are useful if you want to learn more about the systematic reviews.
Systematic Review Series: Annals of Internal Medicine
The UK Faculty of Public Health has recently taken ownership of the Health Knowledge resource. This new, advert-free website is still under development and there may be some issues accessing content. Additionally, the content has not been audited or verified by the Faculty of Public Health as part of an ongoing quality assurance process and as such certain material included maybe out of date. If you have any concerns regarding content you should seek to independently verify this.
The following journal articles and books are useful if you want to learn more about the systematic reviews.
Systematic Review Series: Annals of Internal Medicine