function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 6],
    ['Biodiversity Data Journal', 18],
    ['Entomological News and Proceedings of the Entomological Section of the Academy of Natural Sciences of Philadelphia', 1],
    ['European Journal of Taxonomy', 1],
    ['Fauna of New Zealand', 1],
    ['Insects of Guam II', 1],
    ['Journal of Natural History', 5],
    ['Linzer biologische Beiträge', 6],
    ['Taxonomic Monographs on Neotropical Hymenoptera', 113],
    ['The London and Edinburgh Philosophical Magazine and Journal of Science, Series 3', 1],
    ['University of California Publications in Entomology', 1],
    ['Verhandlungen der Zoologisch-Botanischen Gesellschaft in Wien', 1],
    ['ZooKeys', 15],
    ['Zootaxa', 20]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=190)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);