Prospective registration of systematic reviews and meta-analysis reports is recommended. The recommendation does not apply to integrative Biology Reviews. Registration sites for systematic review and meta-analysis are:

PROSPERO
www.crd.york.ac.uk/prospero

Cochrane Collaboration
http://www.cochrane.org/cochrane-reviews/registering-titles

Include the registry and trial number in the letter to the editor uploaded with your original submission. For questions, please contact Rita Pickler, Editor.
[email protected]