function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 362],
    ['Birkhaeuser Verlag', 36],
    ['Bulletin of the American Museum of Natural History', 10],
    ['European Journal of Taxonomy', 128],
    ['Geodiversitas', 45],
    ['Journal of Natural History', 313],
    ['Linzer biologische Beiträge', 9],
    ['Public Library of Science, ONE', 11],
    ['Raffles Bulletin of Zoology', 11],
    ['Species Diversity', 18],
    ['ZooKeys', 13],
    ['Zoological Journal of the Linnean Society', 37],
    ['Zoological Science', 23],
    ['Zoosystema', 29],
    ['Zootaxa', 1004],
    ['Other (18)', 44]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=2093)',
    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);