function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Zoologica Academiae Scientiarum Hungaricae', 1],
    ['Beiträge Zur Entomologie = Contributions to Entomology', 4],
    ['Belgian Journal of Entomology', 2],
    ['Biodiversity Data Journal', 47],
    ['Journal of Hymenoptera Research', 1],
    ['Linzer biologische Beiträge', 4],
    ['Nova acta Academiae Caesareae Leopoldino-Carolinae Germanicae Naturae Curiosorum', 1],
    ['Subterranean Biology', 1],
    ['Zootaxa', 35]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=96)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);