function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin', 2],
    ['Acta Palaeontologica Polonica', 3],
    ['Annotationes Zoologicae Japonenses', 15],
    ['Biodiversity Data Journal', 5],
    ['European Journal of Taxonomy', 10],
    ['Geodiversitas', 3],
    ['Journal of Paleontology, (J. Paleontol.)', 3],
    ['New Zealand journal of geology and geophysics', 2],
    ['PeerJ', 9],
    ['Proceedings of the Zoological Society of London', 2],
    ['ZooKeys', 35],
    ['Zoological Journal of the Linnean Society', 16],
    ['Zoologischer Anzeiger', 3],
    ['Zoosystema', 3],
    ['Zootaxa', 194],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=308)',
    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);