aMedical School, University of Western Australia

bDepartment of Cardiology, Royal Perth Hospital

cDepartment of Clinical Biochemistry and Cardiovascular Genetics, PathWest Laboratory Medicine WA, Royal Perth and Fiona Stanley Hospitals

dDepartment of Biochemistry, Clinipath Pathology, Sonic Healthcare

eDepartments of Internal Medicine and Cardiology, Royal Perth Hospital

fMedical School, Curtin University

gDepartment of Endocrinology and Diabetes, Fiona Stanley Hospital, Perth, Australia

Correspondence to Nick S.R. Lan, Department of Cardiology, Royal Perth Hospital, Perth, Western Australia 6000, Australia. E-mail: [email protected]