function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Almquist and Wiksells', 1],
    ['Annales du Musée Royal du Congo Belge, Tervuren (Série in 8 º) Sciences Zoologiques', 1],
    ['Annali del Museo Civico di Storia Naturale di Genova', 1],
    ['Annals of the Natal Museum', 2],
    ['Arkiv för Zoologi', 1],
    ['Bulletin of the British Arachnological Society', 1],
    ['Entomo-Info', 1],
    ['Eos, Revista Española de Entomología', 1],
    ['Phegea', 1],
    ['Revue suisse de zoologie', 1],
    ['Stanford University Publications, University Series, Biological Sciences', 1],
    ['Transactions of the Linnean Society of London, Second Series. Zoology', 1],
    ['Zoosystematics and Evolution', 1],
    ['Zootaxa', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);