1 IFCC Task Force Paediatric Laboratory Medicine; Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario, Canada. Electronic address: greyv@mcmaster.ca.
2 IFCC Task Force Paediatric Laboratory Medicine; Carl von Ossietzky Universität Oldenburg, Fakultät für Medizin und Gesundheitswissenschaften, Rahel-Straus-Str. 10, D-26133 Oldenburg, Germany; Klinikum Oldenburg gGmbH, Institut für Laboratoriums diagnostik und Mikrobiologie, Rahel-Straus-Str. 10, D-26133 Oldenburg, Germany. Electronic address: kohse.klaus@klinikum-oldenburg.de.
3 IFCC Task Force Paediatric Laboratory Medicine; SA Pathology at the Women's & Children's Hospital, 72 King William Road, North Adelaide, South Australia 5006, Australia. Electronic address: michael.metz@health.sa.gov.au.
4 IFCC Task Force Paediatric Laboratory Medicine; Consultant Clinical Scientist, Clinical Biochemistry Department, University Hospital of North Durham, North Road, Durham DH1 5TW, UK. Electronic address: tim.lang@cddft.nhs.uk.