function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['American Malacological Bulletin', 4],
    ['Biodiversity Data Journal', 14],
    ['Handbook of the Mammals of the World – Volume 9 Bats', 3],
    ['Johan Christi. Trappii', 6],
    ['Johan. Christi. Trappii', 7],
    ['Journal of Natural History', 3],
    ['Journal of the Academy of Natural Sciences of Philadelphia', 12],
    ['Laurentius Salvius', 62],
    ['Mémoires du Muséum national d\'Histoire naturelle', 166],
    ['PaleoBios', 3],
    ['Proceedings of the Zoological Society of London', 3],
    ['Schultz', 4],
    ['ZooKeys', 4],
    ['Zoosystema', 122],
    ['Zootaxa', 52],
    ['Other (31)', 42]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=507)',
    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);