[1] Amsterdam UMC Locat Vrije Univ Amsterdam, Dept Eth Law & Humanities, Amsterdam, Netherlands
[2] Amsterdam Publ Hlth, Qual Care, Amsterdam, Netherlands
[3] Amsterdam UMC Locat Vrije Univ Amsterdam, Dept Midwifery Sci, Amsterdam, Netherlands
[4] InHolland, Midwifery Acad Amsterdam Groningen, Amsterdam, Netherlands
[5] Univ Groningen, Univ Med Ctr Groningen, Dept Primary & Long Term Care, Groningen, Netherlands
[6] VSV Westfriesland Waterland IGO Geboortehart, Zaanstreek Waterland, Netherlands
[7] Vrije Univ Amsterdam, Athena Inst, Amsterdam, Netherlands
[8] Amsterdam UMC Locat Vrije Univ Amsterdam, Dept Publ & Occupat Hlth, Amsterdam, Netherlands
[9] Univ Nottingham, Sch Hlth Sci, Div Midwifery, Nottingham, England
[10] Maxima Med Ctr, Dept Obstet & Gynaecol, Veldhoven, Netherlands