Document is current

Article History

Received: 30 April 2019

Accepted: 20 November 2019

First Online: 18 December 2019

Ethics approval and consent to participate

: Under the Swedish Act concerning the Ethical Review of Research Involving Humans this study did not require ethical approval. The study nevertheless followed the guidelines of the Declaration of Helsinki [CitationRef removed] and the project was approved by the institutional research ethics board at Malmö University (HS 2015, no 4). Oral and written informed consent was obtained from all participants.

: Not applicable.

: The authors declare that they have no competing interests.