function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 11],
    ['Bulletin of the National Science Museum, Series A (Zoology)', 10],
    ['European Journal of Taxonomy', 38],
    ['Fragmenta Faunistica', 11],
    ['Journal of Natural History', 145],
    ['Journal of Species Research', 5],
    ['Records of the Australian Museum', 40],
    ['Species Diversity', 7],
    ['Subterranean Biology', 5],
    ['ZooKeys', 120],
    ['ZooNotes', 18],
    ['Zoological Journal of the Linnean Society', 86],
    ['Zoological Science', 5],
    ['Zoosystematics and Evolution', 16],
    ['Zootaxa', 390],
    ['Other (23)', 37]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=944)',
    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);