function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 10],
    ['Arthropod Systematics & amp; Phylogeny', 22],
    ['Biodiversity Data Journal', 1],
    ['Deutsche Entomologische Zeitschrift', 7],
    ['European Journal of Taxonomy', 35],
    ['Insecta Mundi', 17],
    ['Japanese Journal of Systematic Entomology', 2],
    ['Journal of Natural History', 13],
    ['Laurentius Salvius', 4],
    ['Linzer biologische Beiträge', 1],
    ['Palaeoentomology', 1],
    ['Proceedings of the Entomological Society of Washington', 3],
    ['ZooKeys', 13],
    ['Zootaxa', 79]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=208)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);