function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['American Museum Novitates', 162],
    ['Bonn Zoological Bulletin', 12],
    ['Bulletin of the American Museum of Natural History', 37],
    ['Geodiversitas', 13],
    ['Handbook of the Mammals of the World – Volume 8 Insectivores, Sloths and Colugos', 500],
    ['Laurentius Salvius', 7],
    ['Mammal Species of the World (1 st Edition)', 21],
    ['Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1', 602],
    ['Mammalia', 5],
    ['Mammalian Species', 3],
    ['Palaeontologia Electronica', 13],
    ['ZooKeys', 5],
    ['Zoological Journal of the Linnean Society', 18],
    ['Zoosystema', 11],
    ['Zootaxa', 107],
    ['Other (28)', 37]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=1553)',
    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);