function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 14],
    ['Bulletin Calif St Bd Hort', 1],
    ['Insects of Guam II', 1],
    ['Journal of Natural History', 9],
    ['Linzer biologische Beiträge', 20],
    ['Proceedings of the United States National Museum, 3', 1],
    ['The London and Edinburgh Philosophical Magazine and Journal of Science, Series 3', 2],
    ['U S Dep Agr Ent Bull', 1],
    ['United States Department of Agriculture Technical Series Bulletin', 1],
    ['University of California Publications in Entomology', 1],
    ['ZooKeys', 4],
    ['Zootaxa', 11]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=66)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);