function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales du Musee Royale de l\'Afrique Centrale, Zoologie, Serie 8', 3],
    ['Anzeiger', 1],
    ['Bollettino dei Musei di Zoologia ed Anatomia Comparata della R. Università di Torino', 1],
    ['Bulletin de la Société Philomathique de Paris, Série 7', 3],
    ['Bulletin de la Société Zoologique de France', 1],
    ['Bulletin of the British Museum (Natural History), Zoology Series', 1],
    ['Mem. Acad. R. Sci. Lisboa', 1],
    ['Monatsberichte der Akademie der Wissenschaft zu Berlin', 1],
    ['Mémoires du Muséum national d\'Histoire naturelle', 2],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 1],
    ['Proceedings of the Zoological Society of London, B', 9],
    ['Raffles Bulletin of Zoology', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=27)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);