function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acarologia', 50],
    ['Bulletin of the National Science Museum, Series A (Zoology)', 9],
    ['Ecologica Montenegrina', 14],
    ['Entomologist\'s monthly magazine', 18],
    ['Insecta Mundi', 9],
    ['Journal of Natural History', 10],
    ['Journal of Parasitology', 2],
    ['Linzer biologische Beiträge', 15],
    ['Persian Journal of Acarology', 81],
    ['Redia', 3],
    ['Veröffentlichungen des Instituts für Meeresforschung Bremerhaven', 8],
    ['Vestnik Zoologii', 14],
    ['ZooKeys', 15],
    ['Zoology in the Middle East', 3],
    ['Zootaxa', 601],
    ['Other (15)', 16]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=868)',
    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);