[1] Uppsala Univ, Dept Womens & Childrens Hlth, Obstet & Gynaecol, Uppsala, Sweden
[2] Univ Melbourne, Rural Hlth Acad Ctr, Shepparton, Vic, Australia
[3] Linkoping Univ, Fac Hlth Sci, Dept Clin & Expt Med, Obstet & Gynaecol, Linkoping, Sweden
[4] Northeast Hlth Wangaratta, Educ & Res Unit, Wangaratta, Australia
[5] Karolinska Inst, Div Reprod & Perinatal Healthcare, Dept Womens & Childrens Hlth, Stockholm, Sweden
[6] Mid Sweden Univ, Dept Nursing, Sundsvall, Sweden