function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. Constable', 3],
    ['Acta Societatis Regiae Scientiarum Indo-Neêrlandicae', 5],
    ['Archiv für Naturgeschichte', 1],
    ['Bulletin Inst. Fondam. Afr. Noire Sci. Nat., A', 1],
    ['Bulletin of the United States Bureau of Fisheries', 1],
    ['Calcutta Journal of Natural History, and Miscellany of the Arts and Sciences in India', 4],
    ['European Journal of Taxonomy', 1],
    ['Journal and Proceedings of the Asiatic Society of Bengal', 2],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 5],
    ['Proceedings of the California Academy of Sciences, Series 1', 1],
    ['Report of the British Association for the Advancement of Science', 1],
    ['Trans. Proc. N. Z. Inst.', 1],
    ['Verhandelingen van het Bataviaasch Genootschap van Kunsten en Wetenschappen', 3],
    ['Zootaxa', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=32)',
    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);