function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African invertebrates', 1],
    ['Biodiversity Data Journal', 4],
    ['Contributions to Zoology', 2],
    ['European Journal of Taxonomy', 19],
    ['Fossil Record', 2],
    ['Journal of Natural History', 86],
    ['Raffles Bulletin of Zoology', 4],
    ['Species Diversity', 25],
    ['The American Journal of Science and Arts, Series 3', 3],
    ['ZooKeys', 34],
    ['Zoological Journal of the Linnean Society', 14],
    ['Zoologischer Anzeiger', 8],
    ['Zoosystema', 8],
    ['Zoosystematics and Evolution', 13],
    ['Zootaxa', 971],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=1200)',
    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);