function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales de la Societe Entomologique de Belgique', 3],
    ['Annales de la Société Entomologique de France', 1],
    ['Asian Myrmecology', 1],
    ['Beiträge Zur Entomologie = Contributions to Entomology', 1],
    ['Berliner Entomologische Zeitschrift', 1],
    ['Biodiversity Data Journal', 3],
    ['British Museum', 3],
    ['Bulletin de la Societe Vaudoise des Sciences Naturelles', 2],
    ['Caucasian Entomological Bulletin', 2],
    ['Deutsche Entomologische Zeitschrift', 3],
    ['Entomologische Mitteilungen', 1],
    ['Journal of the Proceedings of the Linnean Society of London, Zoology', 1],
    ['Proceedings of the Institute of Zoology', 1],
    ['ZooKeys', 2],
    ['Zootaxa', 47],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=80)',
    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);