1 Serology and Virology Division, NSW Health Pathology East (Randwick Campus), Prince of Wales Hospital, Sydney, NSW, Australia; School of Clinical Medicine, University of New South Wales, Sydney, NSW, Australia.
2 Department of Anatomical Pathology, NSW Health Pathology East (Randwick Campus), Prince of Wales Hospital, Sydney, NSW, Australia.
3 Department of Anatomical Pathology, NSW Health Pathology East (Randwick Campus), Prince of Wales Hospital, Sydney, NSW, Australia; School of Biomedical Sciences, University of New South Wales, Sydney, NSW, Australia.
4 Obstetrics and Gynaecology, Shoalhaven District Memorial Hospital, Nowra, NSW, Australia.
5 Royal Hospital for Women, Sydney, NSW, Australia; Children's Hospital at Westmead Clinical School, The University of Sydney, Sydney, NSW, Australia.
6 Serology and Virology Division, NSW Health Pathology East (Randwick Campus), Prince of Wales Hospital, Sydney, NSW, Australia; School of Clinical Medicine, University of New South Wales, Sydney, NSW, Australia; School of Biomedical Sciences, University of New South Wales, Sydney, NSW, Australia; School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, Australia. Electronic address: w.rawlinson@unsw.edu.au.