function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annalen des kaiserlich-königlichen naturhistorischen Hofmuseums', 1],
    ['Batalleria', 1],
    ['Biodiversity Data Journal', 1],
    ['Ecologica Montenegrina', 3],
    ['Geodiversitas', 6],
    ['Linzer biologische Beiträge', 3],
    ['Meddelelser fra Dansk geologisk forening = Bulletin of the Geological Society of Denmark', 1],
    ['Proceedings of the Malacological Society of London', 1],
    ['Quarterly Journal of the Geological Society, London', 9],
    ['Records of the Australian Museum', 9],
    ['Revue de Paléobiologie', 4],
    ['Transactions of the geological society of London, 2', 6],
    ['ZooKeys', 2],
    ['Zoosystematics and Evolution', 54],
    ['Zootaxa', 86]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=187)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);