function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acarologia', 942],
    ['Acarological Studies', 23],
    ['Annals of the Entomological Society of America', 4],
    ['Florida entomologist', 5],
    ['Journal of Natural History', 45],
    ['Papéis Avulsos de Zoologia', 11],
    ['Persian Journal of Acarology', 34],
    ['Records of the Zoological Survey of India', 7],
    ['Soil Organisms', 14],
    ['Species Diversity', 5],
    ['Veröffentlichungen des Instituts für Meeresforschung Bremerhaven', 3],
    ['Vestnik Zoologii', 4],
    ['ZooKeys', 29],
    ['Zoodiversity', 25],
    ['Zootaxa', 1783],
    ['Other (16)', 21]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=2955)',
    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);