function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 23],
    ['Biodiversity Data Journal', 3],
    ['Deutsche Entomologische Zeitschrift', 4],
    ['European Journal of Taxonomy', 4],
    ['Linzer biologische Beiträge', 60],
    ['Papéis Avulsos de Zoologia', 10],
    ['Papéis avulsos de zoologia', 5],
    ['Raffles Bulletin of Zoology', 12],
    ['Records of the Australian Museum', 10],
    ['Revue suisse de Zoologie', 17],
    ['Revue suisse de zoologie', 5],
    ['Transactions of the American Entomological Society', 6],
    ['ZooKeys', 38],
    ['Zoological Systematics', 9],
    ['Zootaxa', 455],
    ['Other (18)', 25]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=686)',
    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);