function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 33],
    ['Bulletin of the National Science Museum, Series A (Zoology)', 2],
    ['Deutsche Entomologische Zeitschrift', 14],
    ['E. W. Janson', 2],
    ['Entomologisk Tidskrift', 2],
    ['European Journal of Taxonomy', 50],
    ['Far Eastern Entomologist', 110],
    ['Journal of Hymenoptera Research', 39],
    ['Journal of Natural History', 14],
    ['Linzer biologische Beiträge', 567],
    ['Papéis Avulsos de Zoologia', 6],
    ['Siegfried Lebrecht Crusius', 2],
    ['ZooKeys', 553],
    ['Zoosystematica Rossica', 3],
    ['Zootaxa', 771],
    ['Other (7)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=2176)',
    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);