function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 8],
    ['Bulletin of the American Museum of Natural History', 2],
    ['Contributions to Zoology', 8],
    ['European Journal of Taxonomy', 4],
    ['Journal of Natural History', 6],
    ['Nauplius', 4],
    ['Raffles Bulletin of Zoology', 3],
    ['Species Diversity', 5],
    ['Subterranean Biology', 8],
    ['Turkish Journal of Zoology', 3],
    ['ZooKeys', 137],
    ['ZooNotes', 19],
    ['Zoological Journal of the Linnean Society', 6],
    ['Zoosystematics and Evolution', 12],
    ['Zootaxa', 61],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=287)',
    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);