Received: 4 October 2019
Accepted: 21 January 2020
First Online: 3 February 2020
Ethics approval and consent to participate
: The data was collected as a part of two research projects approved by the Swedish Ethical Review Authority in Stockholm (reference number 2015/1977–31/4) and Lund (reference number 2015/663–3/12 and 2016/92–12/5), Sweden. All participants and their caregivers received verbal and written information prior to inclusion and provided written informed consent.
: Not applicable.
: Dr. Andersson reported receiving book royalties outside the submitted work. Dr. Mataix-Cols reported receiving personal fees from UpToDate, Wolters Kluwer Health, and Elsevier outside the submitted work. No other disclosures were reported.