aSchool of Population Health, Faculty of Medicine and Health, University of New South Wales, Sydney, Australia
bDepartment of Chronic Diseases, Norwegian Institute of Public Health, Oslo, Norway
cCentre for Pharmacoepidemiology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
dDepartment of Clinical Epidemiology, Department of Clinical Medicine, Aarhus University and Aarhus University Hospital, Aarhus, Denmark
eDepartment of Clinical Medicine, University of Bergen, Bergen, Norway
fDepartment of Neurology, Haukeland University Hospital, Bergen, Norway
gKnowledge Brokers, Finnish Institute for Health and Welfare, Helsinki, Finland
hDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
iResearch Centre for Child Psychiatry, University of Turku, Turku, Finland
jNational Drug and Alcohol Research Centre, Faculty of Medicine and Health, University of New South Wales, Sydney, Australia
kCentre for Fertility and Health, Norwegian Institute of Public Health, Oslo, Norway
lCentre of Public Health Sciences, Faculty of Medicine, University of Iceland, Reykjavik, Iceland
∗Corresponding author. School of Population Health, Faculty of Medicine and Health, University of New South Wales, Sydney, Australia. helgaz@hi.is