1 Department of Obstetrics and Gynaecology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
2 Department of Internal Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
3 Department of Statistics, Clinical Epidemiology and Biostatistics, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
4 Division of Laboratory Medicine, Department of Clinical Chemistry, Örebro University Hospital, Örebro, Sweden.
5 School of Medicine and Psychology, College of Health and Medicine, Australian National University, Acton, Australian Capital Territory, Australia.
6 Macarthur Clinical School, Western Sydney University, Campbelltown, New South Wales, Australia.
7 School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.