function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Archiv für Naturgeschichte', 1],
    ['Benham and Leeve', 5],
    ['Bulletin of the National Museum of Nature and Science, Series A (Zoology)', 2],
    ['Bulletin of the National Science Museum, Series A (Zoology)', 4],
    ['C. E. Bohn', 1],
    ['Crustacean Research.', 2],
    ['European Journal of Taxonomy', 7],
    ['Geodiversitas', 4],
    ['Proceedings of the Biological Society of Washington', 3],
    ['Raffles Bulletin of Zoology', 12],
    ['Species Diversity', 3],
    ['ZooKeys', 5],
    ['Zoological Science', 2],
    ['Zoosystema', 48],
    ['Zootaxa', 163],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=267)',
    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);