function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Zoologica Sinica', 1],
    ['Anales del Instituto de Biología, Universidad Nacional Autónoma de México. (Serie Ciencia del Mar y Limnologia)', 1],
    ['Bulletin of the Department of Zoology University of the Panjab (New Series)', 1],
    ['Egyptian University, Faculty of Medicine, Publication No. 12', 1],
    ['Indian Journal of Helminthology', 2],
    ['Indian Journal of Parasitology', 1],
    ['Journal of Parasitology', 1],
    ['Pakistan Journal of Zoology', 2],
    ['Rivista di Parassitologia', 1],
    ['Systematic Parasitology', 1],
    ['Transactions of the Royal Society of New Zealand', 1],
    ['Tulane Studies in Zoology', 1],
    ['Zoopathologica', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);