function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bulletin of the National Science Museum, Series A, Zoology', 1],
    ['Proceedings of the Helminthological Society of Washington', 1],
    ['Rivista di Parassitologia', 1],
    ['Satyû Yamaguti', 2],
    ['The American Midland Naturalist', 1],
    ['Transactions of the American Microscopical Society', 1],
    ['Trudy Karadahs\'koyi Nauchnoyi Stantsiyi imeni T. I. Vyazems\'koho', 1],
    ['Tulane Studies in Zoology', 1],
    ['Tulane Studies in Zoology and Botany', 1],
    ['Uchenye Zapiski Karelo-Finskogo Gosudarstvennogo Universiteta', 1],
    ['Zoologica Scripta', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=12)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);