Funding for this research was provided by:
All Survivors Project (N/A)
Received: 6 August 2019
Accepted: 28 January 2020
First Online: 26 February 2020
Ethics approval and consent to participate
: Not Applicable. This was a review of published literature and therefore ethical approval was not necessary.
: Not Applicable. The manuscript does not contain any individual person’s data in any form.
: The authors declare that they have no competing interests.