function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Parasitologica Polonica', 5],
    ['Acta Zoologica Sinica', 4],
    ['Annales de Parasitologie Humaine et Comparée', 2],
    ['Biologiya Morya, Kiev', 2],
    ['Indian Journal of Helminthology', 3],
    ['Journal of Fujian Teachers University (Natural Science)', 3],
    ['Journal of Parasitology', 5],
    ['Keigaku Publishing Company', 9],
    ['Parasite', 2],
    ['Parazitologiya', 2],
    ['Proceedings of the Helminthological Society of Washington', 2],
    ['Proceedings of the National Academy of Sciences, India, Section B, Biological Sciences', 4],
    ['Science Publications', 2],
    ['Systematic Parasitology', 4],
    ['Zoologica Scripta', 4],
    ['Other (20)', 22]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=75)',
    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);