function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 32],
    ['Beiträge Zur Entomologie = Contributions to Entomology', 29],
    ['Biodiversity Data Journal', 26],
    ['Contributions to Entomology', 4],
    ['Entomo Helvetica', 7],
    ['Ioannis Thomae Trattner', 2],
    ['Journal of Natural History', 4],
    ['Laurentii Salvii', 3],
    ['Laurentius Salvius', 7],
    ['Linzer biologische Beiträge', 11],
    ['Schulz-Wundermann', 21],
    ['Typis Hæredum Widmanstadii', 2],
    ['Zoological Journal of the Linnean Society', 44],
    ['Zoosystema', 2],
    ['Zootaxa', 343],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=545)',
    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);