function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales de la Société Entomologique de France, Séries 1 - 6', 1],
    ['Atti della Reale Accademia Economico-Agraria dei Georgofili di Firenze, n. s.', 1],
    ['Insecta Mundi', 4],
    ['Insects of Guam II', 2],
    ['Japanese Journal of Systematic Entomology', 2],
    ['Psyche', 1],
    ['Trans Proc N Z Inst', 2],
    ['Transactions of the Entomological Society of London', 1],
    ['ZooKeys', 9],
    ['Zoosystema', 2],
    ['Zootaxa', 52]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=77)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);