socio-ecological model for cigarette use

Summarize research that has used a socio-ecological model or socio-contextual model to explain adolescent cigarette use.
1) Do not include an introduction.
2) Cite at least 10 references. No need to include reference list just make sure to have all author names and dates in the citation.

3) Write a summary for each reference.
4) Try to stick to references that were written in the past 10 years.
5) Focus on cigarette papers that are structured like this paper: Developing and applying a socio-ecological model to the promotion of healthy eating in the school by Nick Townsend and Charlie Foster.
Again the papers should be about cigarettes not eating at school.
6) Write a summary that includes:
a. Descriptions the variables that are typically studied at each ecological level and their observed association with cigarette use.
b. Describe future directions that are discussed in each paper cited.