Thomas Pietschmann Browse All Authors Famous Quotes by Thomas Pietschmann The increase in purity is the result of an increase in production from Latin America, from 2013 to 2016, there has been a tripling of cocaine production in Colombia. If there's more on the market, you increase the purity. If there's less in the market, you reduce the purity. Thomas Pietschmann health-news Problems can be expected to increase if prevalence of use, and particularly high-risk patterns of use, increases. Thomas Pietschmann health-news
