function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales des Sciences Naturelles, Zoologie, Série 2', 1],
    ['Biodiversity Data Journal', 10],
    ['Bulletin of the Department of Zoology University of the Panjab (New Series)', 1],
    ['Bulletin of the National Science Museum, Series A (Zoology)', 1],
    ['Centralblatt für Bakteriologie, Parasitenkunde und Infektionskrankheiten', 1],
    ['Journal of Parasitology', 4],
    ['Journal of Rakuno Gakuen University Natural Science', 1],
    ['Philippine Journal of Veterinary Medicine', 1],
    ['Proceedings of the Helminthological Society of Washington', 1],
    ['Sinozoologia', 1],
    ['Zeitschrift für Parasitenkunde', 1],
    ['Zoodiversity', 3],
    ['Zoosystema', 1],
    ['Zootaxa', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=34)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);