function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. Constable', 3],
    ['A. F. Rose', 1],
    ['Acta Societatis Regiae Scientiarum Indo-Neêrlandicae', 1],
    ['American Museum Novitates', 1],
    ['Annali del Museo Civico di Storia Naturale di Genova', 1],
    ['Bijdragen tot de Dierkunde', 1],
    ['Check List', 2],
    ['Copeia', 3],
    ['F. G. Levrault', 2],
    ['Journal of Natural History', 4],
    ['Laurentius Salvius', 4],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 2],
    ['Proceedings of the Zoological Society of London, B', 2],
    ['Verhandelingen van het Bataviaasch Genootschap van Kunsten en Wetenschappen', 2],
    ['Zootaxa', 20],
    ['Other (16)', 16]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=65)',
    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);