function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Medica Okayama', 1],
    ['Acta Medicinae Okayama', 1],
    ['Acta Zootaxonomica Sinica', 1],
    ['Annals of Agricultural Science (Cairo)', 1],
    ['Bulletin de la Société Zoologique de France', 1],
    ['Bulletin of the National Science Museum, Series A, Zoology', 1],
    ['Folia Parasitologica', 1],
    ['Helminthologia', 1],
    ['Indian Journal of Helminthology', 1],
    ['Journal of Parasitology', 7],
    ['Journal of helminthology', 4],
    ['Keigaku Publishing Company', 2],
    ['Pakistan Journal of Zoology', 2],
    ['Rivista di Parassitologia', 6],
    ['Tulane Studies in Zoology and Botany', 3],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=39)',
    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);