Twenty Years of the Cochrane Tobacco Addiction Group: Past, Present, and Future.

Implications: This review provides an overview of the work of Cochrane TAG. Readers will gain an insight into the origins of the group, its impact on evidence-based medicine relating to tobacco addiction, and the goals of the group moving forward. This supports the group's aim to encourage knowledge of Cochrane's work within the field, and thereby the wider use of and contribution to high-quality systematic reviews and meta-analyses of the literature to improve policy and clinical practice.