[1] Univ Auckland, Sch Populat Hlth, Dept Gen Practice & Primary Hlth Care, Auckland, New Zealand
[2] Hosp New Zealand, Wellington, New Zealand
[3] Univ Melbourne, Fac Med, Sch Rural Hlth, Melbourne, Vic, Australia
[4] Nielsen Co, Client Serv, Wellington, New Zealand
[5] Univ Alberta, Fac Nursing, Edmonton, AB, Canada