function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anales de la Universidad de Chile, Memorias Cientificas y Literarias', 1],
    ['Bulletin de la Société Zoologique de France', 1],
    ['Bulletin of the American Museum of Natural History', 8],
    ['Cybium', 3],
    ['Journal of the Academy of Natural Sciences of Philadelphia, Second Series', 3],
    ['Memoirs of the Museum of Comparative Zoology, at Harvard College', 2],
    ['Mitteilungen aus dem Zoologischen Museum in Berlin', 4],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 1],
    ['Proceedings of the Zoological Society of London, B', 7],
    ['Revue d\'hydrobiologie tropicale', 1],
    ['University of Kentucky', 3],
    ['Zootaxa', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=35)',
    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);