function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 8],
    ['Acta Zoologica Fennica', 36],
    ['Beiträge Zur Entomologie = Contributions to Entomology', 33],
    ['Berliner Entomologische Zeitschrift', 22],
    ['Biodiversity Data Journal', 28],
    ['Entomo Helvetica', 9],
    ['European Journal of Taxonomy', 10],
    ['Naturhistorisk Tidsskrift, Series 3', 9],
    ['Proceedings of the Hawaiian Entomological Society', 9],
    ['Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien', 29],
    ['W. Braunmüller', 156],
    ['ZooKeys', 163],
    ['Zoodiversity', 13],
    ['Zoological Journal of the Linnean Society', 249],
    ['Zootaxa', 739],
    ['Other (23)', 61]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=1574)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);