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. 2013 Nov 28;121(3):290–299. doi: 10.1111/bjo.12510

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© 2013 The Authors. BJOG An International Journal of Obstetrics and Gynaecology published by John Wiley & Sons Ltd on behalf of Royal College of Obstetricians and Gynaecologists.

This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Travel time to all institutions and emergency obstetric care institutions. The proportion of women living outside the 1-hour zone in the 19 counties on 1 January 2000 and 2010 (%) is shown in the background colour scale for all institutions (top) and emergency obstetric care institutions (bottom). The institutions are marked according to the level of care. Based on census data from Statistics Norway and the Norwegian road database.