Margin of Exposure (MOE) for compounds occurring in electronic cigarettes based on probabilistic exposure estimation (simulation with 10,000 iterations). (The box is determined by the 25th and 75th percentiles. The whiskers are determined by the 5th and 95th percentiles. 1st and 99th percentiles are marked by x, while minimum and maximum are marked with dash. Values above 1E7 are not shown).