1 Region Skåne, Psychiatry, Habilitation & Aid, Child and Adolescent Psychiatry, Regional Inpatient Care, Emergency Unit, 205 02 Malmö, Sweden; Region Skåne, Psychiatry, Habilitation & Aid, Child and Adolescent Psychiatry, Regional Inpatient Care, Emergency Unit, 205 02 Malmö, Sweden. Electronic address: bjorn_axel.johansson@med.lu.se.
2 Region Skåne, Psychiatry, Habilitation & Aid, Child and Adolescent Psychiatry, Regional Inpatient Care, Emergency Unit, 205 02 Malmö, Sweden.
3 Region Skåne, Psychiatry, Habilitation & Aid, Child and Adolescent Psychiatry, Regional Inpatient Care, Emergency Unit, 205 02 Malmö, Sweden; Department of Clinical Sciences Lund, Division of Child & Adolescent Psychiatry, Lund University, Lund, Sweden.
4 Department of Mathematical Statistics, Centre for Mathematical Sciences, Lund University, Lund, Sweden.