function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Archives Néerlandaises des Sciences Exactes et Naturelles', 3],
    ['Australian zoologist', 1],
    ['Bulletin of the Raffles Museum', 2],
    ['Bulletin of the United States Fish Commission', 1],
    ['Bulletin of the United States National Museum', 1],
    ['Hong Kong Naturalist', 2],
    ['Ichthyological Bulletin of the J. L. B. Smith Institute of Ichthyology', 2],
    ['Journal of Natural History', 1],
    ['Journal of the Bombay Natural History Society', 1],
    ['Lingnan Science Journal', 1],
    ['Newspaper Enterprise, Ltd.', 3],
    ['Proceedings of the United States National Museum, 3', 2],
    ['Publications of the Field Museum of Natural History, Zoölogical', 3],
    ['Sinensia', 2],
    ['Zootaxa', 10],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=40)',
    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);