[1] Univ Auckland, Dept Med, Auckland, New Zealand
[2] Auckland City Hosp, Cardiac Inherited Dis Grp, Auckland, New Zealand
[3] Auckland City Hosp, Greenlane Cardiovasc Serv, Auckland, New Zealand
[4] Auckland City Hosp, LabPlus, Auckland, New Zealand
[5] Auckland City Hosp, Auckland, New Zealand
[6] Univ Auckland, Dept Obstet & Gynaecol, Auckland 1, New Zealand
[7] Auckland City Hosp, Greenlane Cardiovasc Serv, Auckland, New Zealand
[8] Starship Hosp, Greenlane Paediat Serv, Auckland, New Zealand
[9] Starship Hosp, Congenital Cardiac Serv, Auckland, New Zealand