The study involved 302 leukemia victims who were 18 months of age or younger when the disease was diagnosed, along with a control group of 558 other babies.
Uurimusse kaasati 302 leukeemiahaiget, kes olid haiguse diagnoosimise ajal 18 kuu vanused või nooremad, ning kontrollrühm, kuhu kuulus veel 558 beebit.