Morten W. Fagerland Oslo Centre for Biostatistics and Epidemiology Research Support Services Oslo University Hospital Oslo, Norway morten.fagerland@medisin.uio.no
Stian Lydersen
Regional Centre for Child and Youth Mental Health and Child Welfare
Department of Mental Health
Faculty of Medicine and Health Sciences
Norwegian University of Science and Technology (NTNU)
Trondheim, Norway
stian.lydersen@ntnu.no
Petter Laake Oslo Center for Biostatistics and Epidemiology Institute of Basic Medical Sciences University of Oslo Oslo, Norway
