[1] Univ Hull, Kingston Upon Hull HU6 7RX, N Humberside, England
[2] Univ Western Sydney, Penrith, NSW 1797, Australia
[3] Alice Lee Ctr Nursing Studies, Yong Loo Lin Sch Med Level 2, Clin Res Ctr, Singapore, Singapore
[4] Univ Sydney, Sydney Med Sch, Discipline Psychiat, Sydney, NSW 2006, Australia
[5] Concord Ctr Mental Hlth, Res Unit, Sydney, NSW, Australia