function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annals of the Carnegie Museum', 1],
    ['Biodiversity Data Journal', 2],
    ['European Journal of Taxonomy', 2],
    ['Journal of Natural History', 1],
    ['Journal of the Academy of Natural Sciences of Philadelphia, Second Series', 1],
    ['Proceedings of the United States National Museum, 3', 1],
    ['Records of the Australian Museum Supplement', 3],
    ['Rev. Mus. Paulista', 1],
    ['Sanderiano Commissum', 1],
    ['Tokai University Press', 2],
    ['Transactions of the Literary and Philosophical Society of New York', 1],
    ['Zootaxa', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=28)',
    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);