function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales de la Societe Entomologique de Belgique', 8],
    ['Annales de la Societe Entomologique de Belgique, Comptes-rendus des Seances', 4],
    ['Annali del Museo Civico di Storia Naturale Giacomo Doria (Genova)', 4],
    ['British Museum', 2],
    ['Bulletin de la Societe Vaudoise des Sciences Naturelles', 1],
    ['Jahrbuch der Hamburgischen Wissenschaftlichen Anstalten', 1],
    ['Journal of Natural History', 3],
    ['Journal of the Bombay Natural History Society', 1],
    ['Konowia', 7],
    ['Mitteilungen der Schweizerischen Entomologischen Gesellschaft', 1],
    ['Myrmecologische Nachrichten', 1],
    ['Proceedings of the Institute of Zoology', 1],
    ['Yezhegodnik Zoologicheskogo Muzeya Imperatorskoi Akademii Nauk', 9],
    ['Zootaxa', 24],
    ['Öfversigt af Finska Vetenskaps-Societetens Förhandlingar', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=68)',
    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);