function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Parasitologica Polonica', 2],
    ['Annual Bulletin of the Society of Parasitology Guangdong Province', 1],
    ['Indian Journal of Zootomy', 2],
    ['Japanese Journal of Zoology', 1],
    ['Journal of the Zoological Society of India', 1],
    ['Kanpur University Research Journal (Science)', 1],
    ['Neotropical Helminthology', 1],
    ['Proceedings of the Indian Science Congress (Hyderabad)', 1],
    ['Revue suisse de Zoologie', 1],
    ['Science Publications', 1],
    ['The Zoological Society of India', 1],
    ['Zoologischer Anzeiger', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=14)',
    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);