Social, economic, political, and geographical context that counts: meta-review of implementation determinants for policies promoting healthy diet and physical activity oleh Karolina Lobczowska, Anna Banik, Sarah Forberger, Krzysztof Kaczmarek, Thomas Kubiak, Agnieszka Neumann-Podczaska, Piotr Romaniuk, Marie Scheidmeir, Daniel A. Scheller, Juergen M. Steinacker, Janine Wendt, Marleen P. M. Bekker, Hajo Zeeb, Aleksandra Luszczynska, on behalf of Policy Evaluation Network (PEN) Consortium