function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Actas Soc. Paleontol. B. Aires [In: An. Mus. Publ. B. Aires]', 1],
    ['Beverley Tucker', 3],
    ['Bulletin Acad. Sci. Bruxelles, 2', 1],
    ['Cybium', 1],
    ['European Journal of Taxonomy', 1],
    ['Izvestiya Tomskogo Universiteta', 2],
    ['Laurentius Salvius', 4],
    ['Longman, Brown', 1],
    ['Mölleri apud Heineck et Faber', 2],
    ['Proceedings of the United States National Museum, 3', 1],
    ['Report of the United States Commissioner of Fish and Fisheries', 1],
    ['The Pacific', 2],
    ['Trudy St. Petersburg. Obsh. Estestv.', 1],
    ['Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien', 1],
    ['Zootaxa', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=23)',
    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);