function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 7],
    ['Biodiversity Data Journal', 6],
    ['Bulletin et Annales de la Société Royale Belge d\'Entomologie', 3],
    ['European Journal of Taxonomy', 126],
    ['F. W. Forstmann', 3],
    ['Journal of Natural History', 24],
    ['Linzer biologische Beiträge', 3],
    ['Raffles Bulletin of Zoology', 50],
    ['Records of the Australian Museum', 8],
    ['Revue suisse de Zoologie', 7],
    ['Schultz-Wundermann', 32],
    ['Studia dipterologica', 5],
    ['Transactions of the American Entomological Society', 20],
    ['ZooKeys', 59],
    ['Zootaxa', 735],
    ['Other (8)', 11]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=1099)',
    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);