function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Archiv der Insectengeschichte', 2],
    ['Bibliopolii Academici Novi', 3],
    ['Caucasian Entomological Bulletin', 5],
    ['Ioannis Thomae Trattner', 7],
    ['Japanese Journal of Systematic Entomology', 5],
    ['Joh. Edman', 5],
    ['Laurentii Salvii', 5],
    ['Laurentius Salvius', 81],
    ['Linzer biologische Beiträge', 3],
    ['Mémoires du Muséum national d\'Histoire naturelle', 8],
    ['Officina Libraria Kortii', 6],
    ['The Coleopterists Bulletin', 87],
    ['W. Walther', 3],
    ['ZooKeys', 4],
    ['Zootaxa', 19],
    ['Other (13)', 15]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=258)',
    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);