function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales de la Societe Entomologique de Belgique', 10],
    ['Annales de la Société Entomologique de France', 1],
    ['Berliner Entomologische Zeitschrift', 2],
    ['Biodiversity Data Journal', 1],
    ['Bollettino della Societa Entomologica Italiana', 2],
    ['British Museum', 32],
    ['Bulletin de la Societe Vaudoise des Sciences Naturelles', 6],
    ['C. Reichard', 1],
    ['Conilon coffee - The Coffea canephora produced in Brazil', 1],
    ['Deutsche Entomologische Zeitschrift', 17],
    ['Journal of the Proceedings of the Linnean Society of London, Zoology', 2],
    ['Madras Journal of Literature and Science', 8],
    ['Revista de Entomologia, São Paulo', 13],
    ['Verhandlungen der Zoologisch-Botanischen Gesellschaft in Wien', 3],
    ['Zootaxa', 10]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=109)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);