function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Breviora', 1],
    ['Bulletin of the Raffles Museum', 1],
    ['Check List', 1],
    ['Copeia', 1],
    ['Philippine Journal of Science, Section D', 5],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 1],
    ['Proceedings of the Biological Society of Washington', 2],
    ['Proceedings of the Zoological Society of London, B', 2],
    ['Raffles Bulletin of Zoology', 7],
    ['Stanford Ichthyological Bulletin', 3],
    ['United States Fish and Wildlife Service Research Report', 1],
    ['Zootaxa', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=30)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);