function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Societatis Regiae Scientiarum Indo-Neêrlandicae', 1],
    ['Annales de la Société Impériale d\'Agriculture, Histoire Naturelle de Lyon', 2],
    ['F. S. Hübschmann, Monachii [= Munich] & Fleischer, Lipsiae [= Leipzig]', 1],
    ['Longman’s', 1],
    ['Mémoires de la Société d’Histoire Naturelle de Paris', 2],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 4],
    ['Occasional Papers of the Bernice P. Bishop Museum', 1],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 1],
    ['Proceedings of the California Academy of Sciences, Series 1', 1],
    ['Proceedings of the United States National Museum, 3', 2],
    ['Proceedings of the Zoological Society of London, B', 7],
    ['Report of the British Association for the Advancement of Science', 1],
    ['Report on the Scientific Results of the Voyage of H. M. S. “ Challenger ” during the Years 1873 - 76 under the Command of Captai', 1],
    ['Revue et Magasin de Zoologie, Série 3', 1],
    ['The Zoological Journal', 2],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=33)',
    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);