function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Sibirica', 10],
    ['African Invertebrates', 22],
    ['Biodiversity Data Journal', 16],
    ['European Journal of Taxonomy', 10],
    ['Insecta Mundi', 125],
    ['Journal of Natural History', 66],
    ['Linzer biologische Beiträge', 99],
    ['Proceedings of the Hawaiian Entomological Society', 82],
    ['Raffles Bulletin of Zoology', 53],
    ['Records of the Canterbury Museum', 16],
    ['Smithsonian Miscellaneous Collections', 18],
    ['Vestnik Zoologii', 62],
    ['ZooKeys', 115],
    ['Zoodiversity', 171],
    ['Zootaxa', 1171],
    ['Other (25)', 63]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=2099)',
    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);