PROTOCOL: Electronic mentoring to promote positive youth outcomes for young people under 25: a systematic review.

Competing Interests: DLD has been involved in prior published reviews of youth mentoring programmes. However, these reviews did not address the effectiveness of CMC‐only e‐mentoring programmes, the focus of this review. RMO is the co‐author of practical guidance, published by the Early Intervention Foundation, on how to choose, commission, and evaluate mentoring services (O’Connor & Waddell, 2015); however, the guidance does not address the effectiveness e‐mentoring programmes, and has a specific focus on preventing gang and youth violence. LB is not aware of any potential conflicts of interest. All authors will strive to interpret the results without prejudice or bias.