function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 160],
    ['European Journal of Taxonomy', 32],
    ['Geodiversitas', 180],
    ['Journal of Natural History', 123],
    ['Laurentius Salvius', 63],
    ['Memoirs of the Queensland Museu Nature', 128],
    ['Raffles Bulletin of Zoology', 84],
    ['Records of the Australian Museum', 237],
    ['Report on the Scientific Results of the Voyage of H. M. S. Challenger during the Years 1873 – 76, Zoology', 34],
    ['Zitteliana', 143],
    ['ZooKeys', 668],
    ['Zoological Journal of the Linnean Society', 130],
    ['Zoologische Mededelingen, Leiden', 40],
    ['Zoosystema', 45],
    ['Zootaxa', 1662],
    ['Other (112)', 468]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=4197)',
    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);