function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acarologia', 18],
    ['Acta Zoologica Academiae Scientiarum Hungaricae', 2],
    ['African Invertebrates', 5],
    ['African invertebrates', 1],
    ['Biodiversity Data Journal', 1],
    ['Biologiske Skrifter', 3],
    ['Ecologica Montenegrina', 2],
    ['Hornmilben (Oribatida) [Dahl, Tierwelt Deutschlands, Teil 76]', 13],
    ['Linzer biologische Beiträge', 5],
    ['Persian Journal of Acarology', 11],
    ['Veröffentlichungen des Instituts für Meeresforschung Bremerhaven', 2],
    ['ZooKeys', 2],
    ['Zoological Science', 2],
    ['Zootaxa', 80],
    ['carolinea', 3],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=153)',
    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);