function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. F. Rose', 1],
    ['Acta Societatis Regiae Scientiarum Indo-Neêrlandicae', 2],
    ['Acta Zoologica Sinica', 1],
    ['European Journal of Taxonomy', 13],
    ['F. Schoell', 2],
    ['Japanese Journal of Ichthyology', 2],
    ['Laurentius Salvius', 2],
    ['Mar. Sci., Beijing', 2],
    ['Proceedings of the Biological Society of Washington', 4],
    ['Proceedings of the Zoological Society-Calcutta, Calcutta', 2],
    ['Records of the Australian Museum', 2],
    ['Special Bulletin of the United States National Museum', 2],
    ['Voprosy Ikhtiologii', 3],
    ['Zoological Miscellany', 3],
    ['Zootaxa', 20],
    ['Other (19)', 19]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=80)',
    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);