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Authors
Kössi, Jyrki
Julkunen, Kristiina
Setälä, Marjaleena
Luostarinen, Markku
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Article History
Received: 24 November 2015
Accepted: 22 December 2015
First Online: 4 January 2016
Compliance with ethical standards
:
: No funding.
: The authors declare that they have no competing interests.
: The study was approved by the Ethics Committee of the Joint Authority for Päijät-Häme Social and Health Care. All procedures performed in the study were in accordance with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors.
: According to the ethical standards of the institutional and national research committee, informed consent was not necessary in this kind of patient file-based study.
