function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft', 1],
    ['Biodiversity Data Journal', 36],
    ['European Journal of Taxonomy', 29],
    ['Journal of Natural History', 17],
    ['Linzer biologische Beiträge', 9],
    ['Mitteilungen aus dem Naturhistorischen Museum in Hamburg', 2],
    ['Pacific insects', 2],
    ['Public Library of Science, ONE', 2],
    ['Subterranean Biology', 21],
    ['Transactions of the Entomological Society of London', 2],
    ['ZooKeys', 49],
    ['Zoological Journal of the Linnean Society', 4],
    ['Zoosystema', 144],
    ['Zootaxa', 665],
    ['Öfversigt af Konglelige Vetenskaps-Akademiens Förhandlingar', 2],
    ['Other (14)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=999)',
    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);