Searches on PubMed, with a focus on systematic reviews and meta-analysis were consulted
first. Information from individual articles was then added to broaden the scope or update the
material. Search terms included “tobacco policy impact”, “second hand tobacco smoke acute
myocardial infarction”. Studies that were included in systematic reviews and meta-analysis
were not abstracted in detail for inclusion in this paper except for inclusion of details of
selected studies in tabular format.