Funding for this research was provided by:
the Danish Working Environment Fund (j.nr. 5-2005-09)
Text and Data Mining valid from 2019-03-13
Received: 16 February 2018
Accepted: 21 December 2018
First Online: 13 March 2019
Compliance with ethical standards
: Marianne Agergaard Vammen was funded by Lundbeck A/S. Lundbeck A/S was not involved in any parts of the study or the preparation of the article. Jane Frølund Thomsen is appointed by the Danish National Board of Health to the Committee of Occupational Diseases, an advisory committee for the Danish National Board of Industrial Injuries.
: The study protocol was approved by the local Scientific Ethical Committee (RRS 2006-1028) and the Danish Protection Agency (2009-41-3215). Informed consent was obtained from all individual participants included in the study. All procedures performed in the study were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.