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2. Ministry of Health and Care Services, A Joyful event - A continuous antenatal, intrapartum and postnatal care (White paper no. 12 (2008-2009)), 2009. Retrieved from http://www.regjeringen.no.
3. Directorate of Health, National Professional Guidelines for Antenatal Care, 2019.Retrieved from https://www.helsedirektoratet.no/retningslinjer/svangerskapsomsorgen/konsultasjoner-i-svangerskapsomsorgen.
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5. World Health Organization, WHO recommendations on antenatal care for a positive pregnancy experience, 2016. Retrieved from https://apps.who.int/iris/bitstream/handle/10665/250796/9789241549912-eng.pdf?sequence=1.