function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Parasitologica Polonica', 2],
    ['Acta Zootaxonomica Sinica', 5],
    ['Biologiya Morya, Kiev', 1],
    ['Izvestiya Tikhookeanskoi Nauchno-Promyslovi Ostantsii', 1],
    ['Journal of Science of the Hiroshima University, Section B, Division 1', 1],
    ['Journal of helminthology', 3],
    ['Pakistan Journal of Zoology', 1],
    ['Parasitology', 3],
    ['Proceedings of the Helminthological Society of Washington', 1],
    ['Proceedings of the Imperial Academy', 2],
    ['Publications of the Seto Marine Biological Laboratory', 2],
    ['Satyû Yamaguti', 1],
    ['Science Press', 1],
    ['Studia Marina Sinica', 2],
    ['The American Midland Naturalist', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=27)',
    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);