article_snippet: The study involved children whose blood samples were taken in in 1980 and 1983 as part in the Cardiovascular Risk in Young Finns Study.
article_snippet: In 2001 and 2007, ultrasound readings of children whose blood samples were taken in in 1980 and 1983 as part in the Cardiovascular Risk in Young Finns Study
article_snippet: Then in 2014, Finnish researchers measured the participant's childhood blood cotinine levels from samples collected and frozen in 1980.