[1] Univ Otago, Dept Paediat, Dunedin, New Zealand
[2] Univ Otago, Biostat & Computat Biol Unit, Dunedin, New Zealand
[3] Te Whatu Ora Hlth New Zealand, Paediat Dept, Christchurch, New Zealand
[4] Te Whatu Ora Hlth New Zealand, Endocrinol Dept, Christchurch, New Zealand
[5] Te Whatu Ora Hlth New Zealand, Paediat Endocrinol Dept, Christchurch, New Zealand
[6] Starship Child Hlth, Te Whatu Ora Hlth New Zealand, Te Toka Tumai Auckland, Auckland, New Zealand
[7] Univ Auckland, Liggins Inst, Auckland, New Zealand
[8] Univ Auckland, Dept Paediat, Auckland, New Zealand
[9] Te Whatu Ora Hlth New Zealand, Waikato Reg Diabet Serv, Waikato, New Zealand
[10] Univ Waikato, Waikato Med Res Ctr, Hamilton, New Zealand
[11] Dunedin Sch Med, Dept Womens & Childrens Hlth, Dunedin, New Zealand
[12] Te Whatu Ora Southern, Paediat Dept, Dunedin, New Zealand
[13] Univ Otago, Dept Paediat, 2 Riccarton Ave,POB 4345, Christchurch 8140, New Zealand