[1] Dunedin Hosp, Dept Endocrinol, Dunedin, New Zealand
[2] Univ Otago, AgRes Mol Biol Unit, Dunedin, New Zealand
[3] Univ Otago, Ctr Gene Res, Dept Biochem, Dunedin, New Zealand
[4] Dunedin Hosp, Cytomol Genet Lab, Healthlab Otago, Dunedin, New Zealand