function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 33],
    ['Carolum Reichard', 1],
    ['Christ. Gottl. Proft', 1],
    ['E. W. Janson', 5],
    ['Entomologisk Tidskrift', 2],
    ['Far Eastern Entomologist', 70],
    ['In: Brullé, Histoire naturelle des animaux articulés .., t. 3. P. Duménil', 1],
    ['Journal of Hymenoptera Research', 4],
    ['Journal of Natural History', 17],
    ['Linzer biologische Beiträge', 365],
    ['Siegfried Lebrecht Crusius', 2],
    ['ZooKeys', 357],
    ['Zootaxa', 225]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=1083)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);