function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Zoologica Academiae Scientiarum Hungaricae', 2],
    ['Beiträge Zur Entomologie = Contributions to Entomology', 31],
    ['Biodiversity Data Journal', 174],
    ['Boston Journal of Natural History', 2],
    ['C. Reichard', 1],
    ['Deutsche Entomologische Zeitschrift', 17],
    ['E. W. Janson', 10],
    ['European Journal of Taxonomy', 38],
    ['Far Eastern Entomologist', 4],
    ['Journal of Hymenoptera Research', 21],
    ['Journal of Natural History', 6],
    ['Journal of the Proceedings of the Linnean Society, Zoology', 2],
    ['Linzer biologische Beiträge', 202],
    ['ZooKeys', 55],
    ['Zootaxa', 343],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=911)',
    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);