function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Beiträge Zur Entomologie = Contributions to Entomology', 4],
    ['Berliner Entomologische Zeitschrift', 22],
    ['Kungliga Svenska Vetenskapsakademiens Handlingar, Series 4', 8],
    ['Leopold Voss', 7],
    ['Mitteilungen des Naturwissenschaftlichen Vereines für Steiermark', 3],
    ['Naturhistorisk Tidsskrift, Series 3', 9],
    ['Paleontologia Electronica', 4],
    ['Proceedings of the Hawaiian Entomological Society', 6],
    ['Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien', 29],
    ['W. Braunmüller', 147],
    ['Wiener Entomologische Zeitung', 2],
    ['ZooKeys', 8],
    ['Zoological Journal of the Linnean Society', 6],
    ['Zoological Systematics', 2],
    ['Zootaxa', 9],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=274)',
    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);