^Interesting that the methodology was to measure cardiovascular benefits overall rather than "how much shit do you have in your lungs". I suppose the latter is quite hard to measure without invasive techniques like biopsy.
You can measure black carbon and not do a biopsy.
https://www.ncbi.nlm.nih.gov/pubmed/22362851
@jimmy_james started
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^Interesting that the methodology was to measure cardiovascular benefits overall rather than "how much shit do you have in your lungs". I suppose the latter is quite hard to measure without invasive techniques like biopsy.