Table 1 Eligibility criteria

Inclusion criteria

1. A primary or post-hoc analysis

2. Animal models (e.g., rats and mice), sample population consisting of humans

3. Animals must be administered with nicotine and glucagon-like peptide 1 (GLP-1) agonists (e.g., liraglutide, exendin)

4. Investigate the effect of GLP-1 and GLP-1 agonists on nicotine craving,

5. English language

6. Full-text article available online

Exclusion criteria

1. Secondary articles (e.g., literature reviews, systematic reviews, meta-analyses, posters, abstracts, guidelines, protocols and theses)

2. Full-text is not available