[1] Univ Auckland, Sch Psychol, Fac Sci, Sci Ctr, Bldg 302,Level 2,23 Symonds St, Auckland 1010, New Zealand
[2] Univ Auckland, Fac Med & Hlth Sci, Dept Psychol Med, Auckland, New Zealand
[3] Natl Sci Challenge, E Tipu & Rea Grant 15 02688, Better Start, Auckland, New Zealand
[4] Clin Advisory Serv Aotearoa, Auckland, New Zealand
[5] Univ Auckland, Fac Med & Hlth Sci, Social & Community Hlth, Populat Hlth, Auckland, New Zealand
[6] Univ Otago, Dept Psychol Med, Otago Med Sch, Dunedin, New Zealand
[7] Univ Southampton, Fac Environm & Life Sci, Sch Psychol, Southampton, Hants, England
[8] Northland Dist Hlth Board, Whangarei, New Zealand
[9] Taitokerau Muriwhenua, Northland, New Zealand
[10] Univ Melbourne, Ctr Excellence Youth Mental Hlth, Ctr Youth Mental Hlth, Melbourne, Vic, Australia