function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft', 9],
    ['Annales de la Société Entomologique de France, Nouvelle Série', 1],
    ['Arthropod Systematics & amp; Phylogeny', 17],
    ['Berliner entomologische Zeitschrift', 1],
    ['Canadian entomologist', 1],
    ['Contributions to Zoology', 10],
    ['Entomo Helvetica', 6],
    ['European Journal of Taxonomy', 12],
    ['Linzer biologische Beiträge', 3],
    ['Revue suisse de Zoologie', 3],
    ['Schultz-Wundermann', 14],
    ['Tijdschrift voor Entomologie', 28],
    ['ZooKeys', 19],
    ['Zoological Journal of the Linnean Society', 2],
    ['Zootaxa', 100],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=231)',
    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);