function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A Synonymic Catalogue of Neuroptera Odonata, or Dragonflies. With an Appendix of fossil species', 57],
    ['Acta Biologica Venezuelica', 77],
    ['Annales Societe Entomologique France', 85],
    ['Biodiversity Data Journal', 293],
    ['Insecta Mundi', 34],
    ['Insecta matsumurana', 41],
    ['Miscellanea Zoologica Sumatrana', 183],
    ['Mémoires du Muséum national d\'Histoire naturelle', 180],
    ['Odonatologica', 103],
    ['Proceedings of the Royal Entomological Society of London', 41],
    ['Systematic Entomology', 335],
    ['The Ohio Journal of Science', 34],
    ['Transactions of the Entomological Society of London', 67],
    ['Wiener Entomologische Monatschrift', 51],
    ['Zootaxa', 1584],
    ['Other (110)', 693]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=3858)',
    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);