function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 12],
    ['Contributions to Zoology', 4],
    ['European Journal of Taxonomy', 50],
    ['Evolutionary Systematics', 7],
    ['Journal of Natural History', 87],
    ['Proceedings of the Japanese Society of Systematic Zoology', 7],
    ['Raffles Bulletin of Zoology', 26],
    ['Records of the Australian Museum', 16],
    ['ZooKeys', 32],
    ['Zoological Journal of the Linnean Society', 28],
    ['Zoological Science', 6],
    ['Zoologischer Anzeiger', 7],
    ['Zoosystema', 13],
    ['Zoosystematics and Evolution', 12],
    ['Zootaxa', 1172],
    ['Other (34)', 47]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=1526)',
    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);