function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['American Journal of Science', 3],
    ['Bulletin of the American Museum of Natural History', 3],
    ['Canadian Journal of Earth Sciences', 1],
    ['Contributions to Geology, University of Wyoming', 1],
    ['Geological Survey of Canada Contributions to Canadian Palaeontology', 4],
    ['Journal of Paleontology', 2],
    ['Journal of Vertebrate Paleontology', 1],
    ['Megataxa', 2],
    ['Nature', 1],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 5],
    ['Rocky Mountain Geology', 5],
    ['The American Journal of Science, Series 3', 2],
    ['The American Naturalist', 3],
    ['Zoological Journal of the Linnean Society', 1],
    ['Zootaxa', 3],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=38)',
    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);