function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acarologia', 13],
    ['Acarological Studies', 1],
    ['Acta Zoologica Academiae Scientiarum Hungaricae', 1],
    ['Biologiske Skrifter', 2],
    ['Bulletin of the National Science Museum, Series A (Zoology)', 1],
    ['Hornmilben (Oribatida) [Dahl, Tierwelt Deutschlands, Teil 76]', 3],
    ['International journal of acarology', 1],
    ['Journal of Natural History', 2],
    ['Linzer biologische Beiträge', 5],
    ['Persian Journal of Acarology', 4],
    ['Proceedings of the Japanese Society of Systematic Zoology', 2],
    ['ZooKeys', 4],
    ['Zoologische Verhandelingen', 8],
    ['Zoosystema', 3],
    ['Zootaxa', 102],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=154)',
    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);