function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anzeiger', 2],
    ['Archiv für Naturgeschichte', 3],
    ['Australian zoologist', 2],
    ['Check List', 2],
    ['Journal of the Bombay Natural History Society', 2],
    ['Memoirs of Museum Victoria', 5],
    ['Memoirs of the Carnegie Museum', 2],
    ['Monatsberichte der Akademie der Wissenschaft zu Berlin', 2],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 7],
    ['Newspaper Enterprise, Ltd.', 2],
    ['Nouvelles Archives du Muséum d\'Histoire Naturelle, Paris, Série 2', 3],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 2],
    ['Proceedings of the Linnean Society of New South Wales', 4],
    ['Proceedings of the Zoological Acclimatisation Society of Victoria', 3],
    ['Zootaxa', 51],
    ['Other (25)', 28]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=120)',
    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);