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. 2016 Sep 22;16:124. doi: 10.1186/s12911-016-0360-x

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© The Author(s) 2016

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. The Creative Commons Public Domain Dedication waiver(http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 3 — Choosing the number of states. For the number of states from 3 to 8, we ran the model corresponding to each number of states 50 times, and plotted the minimum BIC for each number of states. We chose the model with 6 states because it can achieve the lowest BIC