function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 1],
    ['C. Fritsch', 1],
    ['Caucasiana', 1],
    ['Christ. Gottl. Proft', 3],
    ['Eberhard Klett et Franck', 1],
    ['European Journal of Taxonomy', 7],
    ['Insects of Guam II', 3],
    ['Ioannis Thomae Trattner', 6],
    ['Laurentii Salvii', 6],
    ['Laurentius Salvius', 95],
    ['Linzer biologische Beiträge', 11],
    ['Officina Libraria Kortii', 4],
    ['Typis Hæredum Widmanstadii', 4],
    ['Zoological Systematics', 2],
    ['Zootaxa', 34],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=183)',
    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);