function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annals of the Cape Provincial Museums Natural History', 1],
    ['Aqua, Journal of Ichthyology and Aquatic Biology', 7],
    ['Biodiversity Data Journal', 1],
    ['Bulletin of Marine Science', 3],
    ['Copeia', 2],
    ['Journal of Fish Biology', 1],
    ['Records of the South Australian Museum', 1],
    ['Records of the Zoological Survey of India', 1],
    ['Revue française d\'Aquariologie Herpétologie', 1],
    ['Senckenbergiana Biologica', 1],
    ['Species Diversity', 4],
    ['Stuttgarter Beiträge zur Naturkunde Serie A, Serie A (Biologie)', 1],
    ['Theses Zoologicae', 2],
    ['ZooKeys', 6],
    ['Zootaxa', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=39)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);