function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. Constable', 5],
    ['A. F. Rose', 1],
    ['Annalen des Naturhistorischen Museums in Wien', 3],
    ['Laurentii Salvii', 4],
    ['Laurentius Salvius', 15],
    ['Mölleri apud Heineck et Faber', 3],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 6],
    ['Proceedings of the Zoological Society of London, B', 4],
    ['Quarterly Journal of Science, Literature, and the Arts', 6],
    ['Records of the Indian Museum', 2],
    ['Sanderiano Commissum', 2],
    ['Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften, Mathematisch-Naturwissenschaften Classe', 8],
    ['Turkish Journal of Zoology', 2],
    ['Zoosystematics and Evolution', 2],
    ['Zootaxa', 11],
    ['Other (15)', 15]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=89)',
    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);