function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 3],
    ['Biodiversity Data Journal', 39],
    ['Bulletin of Entomological Research', 5],
    ['European Journal of Taxonomy', 8],
    ['Fauna of New Zealand', 4],
    ['Insect Systematics and Diversity', 7],
    ['Journal of Natural History', 83],
    ['Journal of Species Research', 10],
    ['Journal of the Australian Entomological Society', 2],
    ['New Zealand Journal of Science', 6],
    ['Parasites & Vectors', 2],
    ['Raffles Bulletin of Zoology', 2],
    ['ZooKeys', 29],
    ['Zoological Journal of the Linnean Society', 10],
    ['Zootaxa', 678],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=893)',
    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);