function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annale van die Suid-Afrikaanse Museum [Annals of the South African Museum]', 2],
    ['Annals of the Carnegie Museum', 2],
    ['Australian zoologist', 6],
    ['Check List', 7],
    ['Croatian Journal of Fisheries', 2],
    ['European Journal of Taxonomy', 6],
    ['Journal of Natural History', 4],
    ['Laurentius Salvius', 2],
    ['Mitteilungen aus dem Zoologischen Staatsinstitut und Zoologischen Museum in Hamburg', 2],
    ['Philippine Journal of Science, Section D', 2],
    ['Proceedings of the Zoological Society of London, B', 2],
    ['Turkish Journal of Zoology', 6],
    ['Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien', 2],
    ['Zoosystematics and Evolution', 2],
    ['Zootaxa', 141],
    ['Other (16)', 16]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=204)',
    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);