function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft', 1],
    ['Algemeene Konst- en Letter-Bode', 1],
    ['Annali del Museo Civico di Storia Naturale \' Giacomo Doria\'', 1],
    ['Aquarien und Terrarien Zeitschrift', 3],
    ['Aquarium Aqua Terra', 1],
    ['Bulletin of the Museum of Comparative Zoology at Harvard College, 3', 1],
    ['Bulletin of the United States National Museum', 1],
    ['Check List', 2],
    ['Harro Hieronimus & Jurgen Schmidt', 2],
    ['Ichthyological Exploration of Freshwaters', 3],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 3],
    ['Raffles Bulletin of Zoology', 12],
    ['Zoological Journal of the Linnean Society', 5],
    ['Zoologische Jahrbucher, Abteilung für Systematik', 3],
    ['Zootaxa', 7],
    ['Other (9)', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=55)',
    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);