function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['American Museum Novitates', 4],
    ['Annales du Musée du Congo Belge, Série 1, Zoologiques', 3],
    ['Annali del Museo Civico di Storia Naturale di Genova', 1],
    ['Biodiversity Data Journal', 2],
    ['Bonner zoologische Beiträge', 1],
    ['Bulletin of the American Museum of Natural History', 2],
    ['Journal of Natural History', 5],
    ['Journal of Threatened Taxa', 2],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 2],
    ['Notes from the Leyden Museum', 4],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 6],
    ['Proceedings of the Zoological Society of London, B', 5],
    ['Raffles Bulletin of Zoology', 6],
    ['Zoological Journal of the Linnean Society', 2],
    ['Zootaxa', 25],
    ['Other (20)', 20]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=90)',
    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);