Recommended: Now that you have your research question/s and your eligibility criteria, the next step is to design your systematic review study protocol. For developing your own protocol, our recommendation is to identify an established guideline or a specific protocol related to your field or topic of inquiry, and use it directly or revise it as needed. Once you have designed your protocol or selected an established protocol and made notes regarding specifics for your study, the next best practice step is to: (1) register your study in PROSPERO and/or (2) publish your protocol and description of your study plan with information about any revisions to major guidelines chosen or development of unique components.
PROSPERO is an excellent option for viewing existing protocols and for registering your study. It is used by Cochrane systematic review teams and others. TIP: It's always a good idea to search PROSPERO and databases in your field for in-process or recently published systematic reviews before starting your study - to ensure it's not already being done by another team!
Below find links to: Commonly Used Protocols or Guidelines and Resources for Revising Existing Major Guildeines (such as PRISMA)
Institute Of Medicine (IOM)
Revising a Protocol? Here are resources for revising existing major guidelines (such as PRISMA)
EQUATOR Network (Enhancing the QUAlity and Transparency Of health Research)