function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['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],
    ['Indian Journal of Helminthology', 4],
    ['Indian Journal of Veterinary Science and Animal Husbandry', 3],
    ['Journal of Parasitology', 1],
    ['Journal of Veterinary Parasitology', 1],
    ['Journal of the Egyptian Society of Parasitology', 1],
    ['Journal of the Zoological Society of India', 1],
    ['Kanpur University Research Journal (Science)', 2],
    ['Memórias do Instituto Oswaldo Cruz', 1],
    ['Rivista di Parassitologia', 2],
    ['Science Publications', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=20)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);