function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bulletin of the American Museum of Natural History', 3],
    ['Current Biology', 2],
    ['Fossil Record', 1],
    ['Geodiversitas', 2],
    ['Historical Biology', 2],
    ['Japanese Journal of Ichthyology', 1],
    ['Journal of Vertebrate Paleontology', 1],
    ['Proceedings of the United States National Museum, 3', 2],
    ['Public Library of Science, ONE', 1],
    ['Revue de Paléobiologie', 1],
    ['ZooKeys', 38],
    ['Zoological Journal of the Linnean Society', 5],
    ['Zootaxa', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=64)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);