function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 12],
    ['Biodiversity Data Journal', 33],
    ['Caucasian Entomological Bulletin', 13],
    ['Dipteron', 13],
    ['Entomo Helvetica', 37],
    ['European Journal of Taxonomy', 11],
    ['Far Eastern Entomologist', 8],
    ['Journal of Natural History', 14],
    ['Raffles Bulletin of Zoology', 32],
    ['Records of the Australian Museum', 51],
    ['Schultz-Wundermann', 43],
    ['Transactions of the American Entomological Society', 17],
    ['ZooKeys', 60],
    ['Zoological Journal of the Linnean Society', 12],
    ['Zootaxa', 664],
    ['Other (21)', 61]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=1081)',
    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);