function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annali dell\'Accademia degli Aspiranti Naturalisti', 1],
    ['Bulletin of the National Science Museum, Series A (Zoology)', 1],
    ['Indo-Malayan zoology', 1],
    ['Journal of Natural History', 38],
    ['Micronesica', 1],
    ['Nauplius', 1],
    ['Records of the Australian Museum', 1],
    ['Siboga-Expeditie', 2],
    ['Zoological Journal of the Linnean Society', 2],
    ['Zoological Science', 1],
    ['Zoologische Mededelingen, Leiden', 16],
    ['Zoosystema', 12],
    ['Zootaxa', 68]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=145)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);