function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acarologia', 25],
    ['Acarological Studies', 2],
    ['Acta Zoologica Academiae Scientiarum Hungaricae', 1],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 2],
    ['Biodiversity Data Journal', 40],
    ['International journal of acarology', 4],
    ['Journal of Natural History', 3],
    ['Linzer biologische Beiträge', 45],
    ['New Zealand Journal of Zoology', 2],
    ['Persian Journal of Acarology', 37],
    ['Prévôt', 1],
    ['Turkish Journal of Zoology', 5],
    ['Veröffentlichungen des Instituts für Meeresforschung Bremerhaven', 11],
    ['ZooKeys', 5],
    ['Zootaxa', 112]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=295)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);