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Article History

Received: 26 October 2017

Accepted: 16 April 2018

First Online: 18 April 2018

Ethics approval and consent to participate

: The Regional Scientific Ethics Committee for Southern Denmark evaluated the project and concluded that the project was not notifiable and could be implemented without the permission from The Regional Scientific Ethical Committee for Southern Denmark according to Danish law. The Scientific Ethics Committee’s evaluation comprised all aspects of the project including the data collection. Answering the questionnaire was completely voluntary and unpaid. All respondents consented to transmission of information about diagnoses from the Danish national health registries. The participants in the study were clearly informed that there would be no clinical follow-up and that they should contact their own GP in case of concern or worry. The project has been approved by the Danish Data Protection Agency (journal number 2011–41-6651).

: When answering the questionnaire all respondents gave consent to publication of data.

: The authors declare that they have no competing interests.

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