1. Haglund Aladdin, B., & Lilja, H. (2016). Graviditet och förlossning. I B. O. Suserud & L. Lundberg (Red.), Prehospital akutsjukvård [Pregnancy and childbirth. In B. O. Suserud & L. Lundberg (ed.), Prehospital emergency care]. Stockholm: Liber AB.
2. The ‘M’ Technique for Pregnancy, Labor and Post-partum;Bischoff;Int J Child Educat,2014
3. Characteristics and outcome of unplanned out-of-institution births in Norway from 1999 to 2013: a cross-sectional study;Gunnarsson;Acta Obstetricia et Gynecol Scand,2014
4. The National Board of Health and Welfare. Socialstyrelsen. (2018). Statistik om graviditeter, förlossningar och nyfödda barn 2016 [Statistics on pregnancies, childbirth and new-born children 2016]; 2018 Downloaded 2019-02-01 from http://www.socialstyrelsen.se/Lists/Artikelkatalog/Attachments/20807/2018-1-6.pdf.
5. The Swedish Municipalities and County Councils. Graviditet och förlossning [Pregnancies and childbirth]; 2016. Downloaded 2019-02-07 from https://vardenisiffror.se/report/view?id=592d2150d4475b02dc29887d#chapter9.