function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Beiträge Zur Entomologie = Contributions to Entomology', 1],
    ['Berliner Entomologische Zeitschrift', 4],
    ['Berliner entomologische Zeitschrift / herausgegeben von dem Entomologischen Verein in Berlin', 1],
    ['Biodiversity Data Journal', 1],
    ['Caucasian Entomological Bulletin', 3],
    ['Ent Blatt', 1],
    ['Ins Life', 1],
    ['Insecta Mundi', 129],
    ['Insects of Guam I', 3],
    ['Journal of Natural History', 2],
    ['Pacific insects', 2],
    ['The Coleopterists Bulletin', 5],
    ['The Scientific Transactions of the Royal Dublin Society, Series 2', 3],
    ['ZooKeys', 37],
    ['Zootaxa', 50],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=246)',
    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);