Causal modelling of variation in clinical practice and long-term outcomes of ADHD using Norwegian registry data: the ADHD controversy project.
Arnstein MykletunTarjei Widding-HavneraasAshmita ChaulagainIngvild LyhmannIngvar BjellandAnne HalmøyFelix ElwertPeter ButterworthSimen MarkussenHenrik Daae ZachrissonKnut RypdalPublished in: BMJ open (2021)
ISRCTN11573246 and ISRCTN11891971.