This section should describe the process of study inclusion for all stages of selection (based on title and abstract examination; based on full text examination) and the procedures for solving disagreements between reviewers. The software used for the management of the results of the search should be specified (e.g. Covidence, Endnote). Selection is performed based on inclusion criteria (See Section 3.2.4) pre-specified in the review protocol. In a systematic review study selection (both at title/abstract screening and full text screening) should be performed by two or more reviewers, independently. Any disagreements are solved by consensus or by the decision of a third reviewer. JBI reviewers are encouraged to read the article by Porritt et al (2014) regarding study selection and critical appraisal.