function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Societatis Regiae Scientiarum Indo-Neêrlandicae', 1],
    ['Annales des Sciences Naturelles, Zoologie, Série 5', 1],
    ['Aquarien und Terrarien Zeitschrift', 2],
    ['Biodiversity Data Journal', 6],
    ['Ichthyological Exploration of Freshwaters', 2],
    ['Journal of South Asian Natural History', 2],
    ['Mitteilungen aus dem Naturhistorischen Museum in Hamburg', 4],
    ['Monogr. Inst. Sci. Tech. Manila', 4],
    ['Notes from the Leyden Museum', 2],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 3],
    ['Proceedings of the Zoological Society of London, B', 2],
    ['Raffles Bulletin of Zoology', 11],
    ['Spixiana', 2],
    ['Zoologischer Anzeiger', 3],
    ['Zootaxa', 29],
    ['Other (18)', 18]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=92)',
    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);