div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: RJ Schmitz et al Nature 000 1-6 2013 doi:101038nature11968 src=https:reader037fdocumentsinreader037viewer202211020956812a55550346895d8da986html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divpRJ Schmitz et al Nature 000 1-6 2013 doi:101038nature11968p pPopulation-wide analyses of SMPspdiv