Tan Kirin, Petrie Keith J, Faasse Kate, Bolland Mark J, Grey Andrew
Departments of Medicine, University of Auckland, Private Bag 92019, Auckland, New Zealand.
Psychological Medicine, University of Auckland, Private Bag 92019, Auckland, New Zealand.
BMJ. 2014 Aug 12;349:g5019. doi: 10.1136/bmj.g5019.