
Astrid Alvik, Tor Haldorsen, Berit Groholt, and Rolf Lindemann
1Sogn Centre for Child and Adolescent Psychiatry, Ulleval University Hospital, University of Oslo, Oslo, Norway; 2Department of Biostatistics, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway; 3Ulleval University Hospital, Oslo, Oslo, Norway; and 4Neonatal Intensive Care Unit, Ulleval University Hospital, Oslo, Norway
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