function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Comptes Rendus de l\'Académie des Sciences. Série II-a Sciences de la Terre et des Planètes', 1],
    ['European Journal of Taxonomy', 9],
    ['F. S. Hübschmann, Monachii [= Munich] & Fleischer, Lipsiae [= Leipzig]', 2],
    ['Journal of Natural History', 4],
    ['Laurentii Salvii', 1],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 1],
    ['Nederlandsch Tijdschrift voor de Dierkunde', 1],
    ['PaleoBios', 1],
    ['Proceedings of the Linnean Society of New South Wales', 1],
    ['Raffles Bulletin of Zoology', 1],
    ['Report of the British Association for the Advancement of Science', 1],
    ['Zitteliana', 1],
    ['Zoological Journal of the Linnean Society', 3],
    ['Zootaxa', 28]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=55)',
    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);