function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Palaeontologica Polonica', 16],
    ['Bulletin of the American Museum of Natural History', 20],
    ['Check List', 27],
    ['European Journal of Taxonomy', 13],
    ['Fossil Imprint', 15],
    ['Geodiversitas', 145],
    ['Handbook of the Mammals of the World – Volume 2 Hoofed Mammals', 319],
    ['Laurentius Salvius', 53],
    ['Mammal Species of the World (1 st Edition)', 273],
    ['Mammal Species of the World (2 nd Edition)', 308],
    ['Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1', 520],
    ['Mammalian Species', 19],
    ['Zoological Journal of the Linnean Society', 61],
    ['Zoosystema', 17],
    ['Zootaxa', 62],
    ['Other (56)', 171]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=2039)',
    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);