function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. F. Rose', 2],
    ['Acta Societatis Regiae Scientiarum Indo-Neêrlandicae', 2],
    ['Archiv für Naturgeschichte', 2],
    ['Bronner', 6],
    ['Bulletin of the Museum of Comparative Zoology at Harvard College, 3', 2],
    ['Bulletin of the United States Fish Commission', 2],
    ['Bulletin of the United States National Museum', 2],
    ['F. Schoell', 2],
    ['Journal of the Academy of Natural Sciences of Philadelphia', 4],
    ['Mem. Mus. Bocage, Lisboa', 2],
    ['Monatsberichte der Akademie der Wissenschaft zu Berlin', 4],
    ['Mölleri apud Heineck et Faber', 3],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 15],
    ['Privately published', 2],
    ['Proceedings of the Zoological Society of London, B', 4],
    ['Other (24)', 27]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=81)',
    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);