Funding for this research was provided by:
Health Research Council of New Zealand (10/400)
Accident Compensation Corporation of New Zealand
Received: 1 April 2019
Accepted: 2 May 2019
First Online: 23 May 2019
Compliance with ethical standards
: The author declares no conflict of interest.
: This was granted for the ViDA study by the Multiregion Ethics Committee, Wellington (MEC/09/08/082). All procedurers in this study on human participants were in accordance with the ethical standards of the aforementioned committee, and with the 1964 Helsinki declaration and its later ammendments.
: All participants in the ViDA study gave written informed consent.