Funding for this research was provided by:
National Health and Medical Research Council (APP 1002663)
Text and Data Mining valid from 2018-02-22
Received: 26 July 2017
Accepted: 27 November 2017
First Online: 22 February 2018
: The data that support the findings of this study are not publicly available as they were generated under a licence for a large linkage project, which restricted access to named, approved investigators.
: The authors declare that there is no duality of interest associated with this manuscript.