function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. F. Rose', 6],
    ['Acta Societatis Regiae Scientiarum Indo-Neêrlandicae', 5],
    ['Archiv für Naturgeschichte', 2],
    ['Beverley Tucker', 2],
    ['Biblioteca de Clasicos Cubanos', 3],
    ['British Museum (Natural History)', 16],
    ['European Journal of Taxonomy', 6],
    ['F. Schoell', 5],
    ['Isis von Oken', 4],
    ['Laurentius Salvius', 8],
    ['Monatsberichte der Akademie der Wissenschaft zu Berlin', 6],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 6],
    ['Proceedings of the California Academy of Sciences, Series 4', 3],
    ['Records of the Australian Museum', 5],
    ['Zootaxa', 20],
    ['Other (40)', 45]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=142)',
    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);