function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Venezuelica', 3],
    ['Bulletin of the National Science Museum, Series A (Zoology)', 1],
    ['Insecta Mundi', 1],
    ['Insecta matsumurana', 1],
    ['International Journal of Odonatology', 2],
    ['Japanese Journal of Systematic Entomology', 2],
    ['Journal of Threatened Taxa', 2],
    ['Miscellanea Zoologica Sumatrana', 3],
    ['Odonatologica', 10],
    ['Proceedings of the Zoological Society of London', 2],
    ['Supplementa Entomologica', 1],
    ['Systematic Entomology', 64],
    ['Treubia', 2],
    ['Zootaxa', 180]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=274)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);