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. 2015 May 26;23(4):181–188. doi: 10.1007/s10389-015-0675-6

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© The Author(s) 2015

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 4 — Factors for the total demand for emergency medical services. synopsis based on: David et al. 2013; Lowthian et al. 2011b; Siegrist 2009; Toloo et al. 2011, 2013; Wrigley et al. 2002