function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Universitatis Daugavpiliensis', 1],
    ['Acta Entomologica Musei Nationalis Pragae', 4],
    ['Amurian Zoological Journal', 2],
    ['C. Fritsch', 2],
    ['Caucasian Entomological Bulletin', 1],
    ['Eberhard Klett et Franck', 1],
    ['European Journal of Taxonomy', 1],
    ['H. Steiner und Comp.', 1],
    ['Insect Systematics and Diversity', 3],
    ['Journal of Natural History', 1],
    ['Laurentii Salvii', 2],
    ['Laurentius Salvius', 9],
    ['Linzer biologische Beiträge', 2],
    ['Zoological Systematics', 10],
    ['Zootaxa', 5],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=46)',
    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);