function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Societatis Regiae Scientiarum Indo-Neêrlandicae', 1],
    ['Annale van die Suid-Afrikaanse Museum [Annals of the South African Museum]', 1],
    ['Anzeiger', 1],
    ['Berlingianis', 1],
    ['Bulletin of the American Museum of Natural History', 302],
    ['Check List', 1],
    ['Monatsberichte der Akademie der Wissenschaft zu Berlin', 2],
    ['Proceedings of the Linnean Society of New South Wales', 2],
    ['Proceedings of the Zoological Society of London, B', 2],
    ['Report of the British Association for the Advancement of Science', 2],
    ['Revue Zoologique, par la Société Cuvierienne', 2],
    ['Transactions of the Linnean Society of London', 2],
    ['Zoosystematics and Evolution', 4],
    ['Zootaxa', 2],
    ['l\'Impremerie Nationale', 2],
    ['Other (12)', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=339)',
    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);