function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 4],
    ['Biodiversity Data Journal', 77],
    ['Bollettino del Laboratorio di Zoologia Generale ed Agraria del R. Scuola d\'Agricultura di Portici', 2],
    ['European Journal of Taxonomy', 22],
    ['Insects of Guam II', 2],
    ['Journal of Hymenoptera Research', 4],
    ['Journal of Natural History', 48],
    ['Journal of Threatened Taxa', 2],
    ['Linzer biologische Beiträge', 65],
    ['Proceedings of the Entomological Society of Philadelphia', 2],
    ['Proceedings of the Hawaiian Entomological Society', 2],
    ['The Journal of Entomology. Descriptive and Geographical', 28],
    ['Transactions of the Entomological Society of London', 50],
    ['ZooKeys', 98],
    ['Zootaxa', 138],
    ['Other (14)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=558)',
    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);