047 - Prenatal exposure to maternal opioid maintenance treatment contributes to developmental and behavioral difficulties at the age of four

Minna Kanervo, University of Helsinki, Helsinki, Uusimaa, Finland; Sarimari J. Tupola, Children,s Hospital University of Helsinki, Espoo, Uusimaa, Finland; Eeva Nikkola, Helsinki University Hospital, Helsinki, Uusimaa, Finland; Mika Gissler, FINNISH INSTITUTE FOR HEALTH AND WELFARE, Helsinki, Uusimaa, Finland; Hanna Kahila, Helsinki University Hospital, Helsinki, Uusimaa, Finland; Krista Rantakari, Helsinki University Hospital, Children's Hospital, Unversity of Helsinki, Finland, Helsinki, Uusimaa, Finland