function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bulletin of the American Museum of Natural History', 4],
    ['Check List', 8],
    ['Fossil Imprint', 3],
    ['Geodiversitas', 19],
    ['Handbook of the Mammals of the World – Volume 6 Lagomorphs and Rodents I', 293],
    ['Laurentius Salvius', 8],
    ['Mammal Species of the World (1 st Edition)', 311],
    ['Mammal Species of the World (2 nd Edition)', 325],
    ['Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2', 738],
    ['Mammalia', 23],
    ['Mammalian Species', 19],
    ['ZooKeys', 3],
    ['Zoological Journal of the Linnean Society', 10],
    ['Zoosystema', 6],
    ['Zootaxa', 41],
    ['Other (7)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=1819)',
    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);