function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Sibirica', 4],
    ['Belgian Journal of Entomology', 4],
    ['Biodiversity Data Journal', 34],
    ['European Journal of Taxonomy', 6],
    ['Far Eastern Entomologist', 2],
    ['Independently published', 3],
    ['Insects of Micronesia', 4],
    ['Journal of Orthoptera Research', 25],
    ['Linzer biologische Beiträge', 10],
    ['Mittheilungen der Schweizer Entomologischen Gessellschaft', 4],
    ['Records of the Australian Museum', 11],
    ['Revue suisse de Zoologie', 18],
    ['ZooKeys', 29],
    ['Zoosystema', 33],
    ['Zootaxa', 280],
    ['Other (7)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=475)',
    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);