Acknowledgements We thank C.P. Klingenberg for critical discussion of methodology. A. Drake and R. Losey were supported by a grant from the Social Sciences and Humanities Research Council of Canada grant (#SSHRC IG 435-2014-0075) and a European Research Council Grant to D. Anderson (#295458). M. Sablin acknowledges participation of ZIN RAS (state assignment № АААА-А17-117022810195-3) to this research. Supplementary information accompanies this paper at doi:10.1038/s41598-017-10232-1
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机译：致谢我们感谢C.P.克林根伯格对方法论进行了批判性讨论。 A. Drake和R. Losey得到了加拿大社会科学与人文研究委员会的资助（#SSHRC IG 435-2014-0075）和欧洲研究委员会给D. Anderson的资助（＃295458）的支持。 M. Sablin承认ZIN RAS（国家指派№АААА-А17-117022810195-3）参与了这项研究。本文的附加信息位于doi：10.1038 / s41598-017-10232-1
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