function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Turcica', 2],
    ['Acta Parasitologica', 3],
    ['Acta Parasitologica Polonica', 3],
    ['Ekologiya Morya', 2],
    ['Journal of Parasitology', 7],
    ['Journal of the Egyptian Society of Parasitology', 2],
    ['Keigaku Publishing Company', 3],
    ['Papers from the Tortugas Laboratory of the Carnegie Institute of Washington', 2],
    ['Parasitology', 2],
    ['Proceedings of the Helminthological Society of Washington', 3],
    ['Satyû Yamaguti', 5],
    ['Systematic Parasitology', 16],
    ['Transactions of the American Microscopical Society', 2],
    ['Transactions of the Royal Society of New Zealand', 2],
    ['Tulane Studies in Zoology', 2],
    ['Other (17)', 19]
  ]);
  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);