function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abhandlungen des Zoologisch-Mineralogischen Vereines in Regensburg', 1],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 2],
    ['Bolletino della Societa geologica italiana', 2],
    ['Bulletin de la Société des sciences de Nancy, 3', 1],
    ['Geological Magazine', 3],
    ['Journal of the Academy of Natural Sciences of Philadelphia', 1],
    ['Kansas University Geological Survey', 1],
    ['Meddelelser fra Dansk geologisk forening = Bulletin of the Geological Society of Denmark', 1],
    ['Naturhistorisk Tidsskrift', 6],
    ['Palaeontographica', 1],
    ['Paleontographical Society', 7],
    ['Proceedings of the Geologists\' Association', 1],
    ['Quarterly Journal of the Geological Society, London', 2],
    ['Transactions of the geological society of London, 2', 4],
    ['Zootaxa', 11],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=46)',
    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);