Tampe, Ulrika http://orcid.org/0000-0003-3254-8479
Widmer, Lukas W.
Weiss, Rüdiger J.
Jansson, Karl-Åke
Article History
Received: 17 February 2018
Accepted: 16 July 2018
First Online: 25 July 2018
Ethics approval and consent to participate
: The study was approved by The Regional Ethical Review Board of Stockholm North (2011/1280–32). This study is based on national registries held by the National Board of Health and Welfare in Sweden. Identification data are not known by the researchers and consent to participation is not applicable.
: Not applicable.
: The authors declare that they have no competing interests
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