function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Zootaxonomica Sinica', 3],
    ['Annual Bulletin of the Society of Parasitology Guangdong Province', 1],
    ['Biodiversity Data Journal', 4],
    ['Bulletin de l\'Institut Fondamental d\'Afrique Noire', 1],
    ['Comparative Parasitology', 2],
    ['Indian Journal of Helminthology', 1],
    ['Journal of Parasitology', 5],
    ['Journal of the Zoological Society of India', 1],
    ['Proceedings of the Helminthological Society of Washington', 4],
    ['Rivista di Parassitologia', 2],
    ['Roosevelt Wild Life Annals', 2],
    ['The American Midland Naturalist', 1],
    ['Transactions of the American Microscopical Society', 1],
    ['Trudy Biologogruntosnavchego Fakulta Kiivs’k', 1],
    ['Zeitschrift für Parasitenkunde', 2],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=33)',
    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);