function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acarologia', 53],
    ['Acarological Studies', 1],
    ['Acta Zoologica Academiae Scientiarum Hungaricae', 4],
    ['Annals of the Entomological Society of America', 1],
    ['Biodiversity Data Journal', 1],
    ['Can J Zool', 1],
    ['Ecologica Montenegrina', 4],
    ['Journal of Natural History', 6],
    ['Linzer biologische Beiträge', 17],
    ['Persian Journal of Acarology', 38],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 10],
    ['Transactions of the American Philosophical Society', 3],
    ['Veröffentlichungen des Instituts für Meeresforschung Bremerhaven', 28],
    ['ZooKeys', 9],
    ['Zootaxa', 1338],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=1516)',
    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);