function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales de la Societe Entomologique de Belgique', 4],
    ['Annali del Museo Civico di Storia Naturale Giacomo Doria (Genova)', 6],
    ['Biodiversity Data Journal', 9],
    ['Bulletin de la Societe Vaudoise des Sciences Naturelles', 2],
    ['Bulletin of the American Museum of Natural History', 6],
    ['Bulletin of the Museum of Comparative Zoology', 9],
    ['Deutsche Entomologische Zeitschrift', 2],
    ['Entomologists Record and Journal of Variation', 2],
    ['Histoire Physique, Naturelle et Politique de Madagascar.', 5],
    ['Journal of Hymenoptera Research', 9],
    ['Memoires de l\'Institut Francais d\'Afrique Noire', 7],
    ['PLoS ONE', 7],
    ['Revue de Zoologie Africaine', 8],
    ['Studia Entomologica', 71],
    ['Zootaxa', 27],
    ['Other (16)', 18]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=192)',
    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);