function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales de la Societe Entomologique de Belgique', 4],
    ['Annals of the Entomological Society of America', 2],
    ['Arthropod fauna of the UAE', 3],
    ['Bollettino del Laboratorio di Zoologia Generale ed Agraria del R. Scuola d\'Agricultura di Portici', 2],
    ['Bollettino della Societa Entomologica Italiana', 1],
    ['Bulletin of the American Museum of Natural History', 2],
    ['Deutsche Entomologische Zeitschrift', 1],
    ['Histoire physique, naturelle et politique de Madagascar. 20.', 3],
    ['Insects of Guam I', 1],
    ['Journal of the Proceedings of the Linnean Society of London, Zoology', 4],
    ['Memoires de l\'Institut Francais d\'Afrique Noire', 2],
    ['Proceedings of the 2 nd International Conference of the Entomological Society of Egypt', 1],
    ['Search: Agriculture; Cornell University Agricultural Experiment Station', 8],
    ['ZooKeys', 7],
    ['Zootaxa', 16]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=57)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);