function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Medicinae Okayama', 1],
    ['Acta Parasitologica', 1],
    ['Acta Zootaxonomica Sinica', 1],
    ['Allan Hancock Pacific Expeditions', 1],
    ['Anales de Instituto de Biología, Universidad Nacional Autónoma de México, Serie Zoologia', 1],
    ['Anales del Instituto de Biología, Universidad Nacional Autónoma de México (Series Zoología)', 1],
    ['Japanese Journal of Zoology', 1],
    ['Journal of Parasitology', 8],
    ['Journal of the Helminthological Society of Washington', 1],
    ['Journal of the Marine Biological Association of India', 2],
    ['Keigaku Publishing Company', 4],
    ['Parasitology', 1],
    ['Proceedings of the Helminthological Society of Washington', 1],
    ['Revista Brasileira de Biologia', 1],
    ['Scientific Survey of Porto Rico and the Virgin Islands', 2],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=28)',
    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);