function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales du Musee Royale de l\'Afrique Centrale, Zoologie, Serie 8', 1],
    ['Atti della Societa Toscana di Scienze Naturali, Series B', 1],
    ['Boletín de la Sociedad Geológica Mexicana', 1],
    ['Bulletin du Muséum National d’Histoire Naturelle, Série 2', 2],
    ['Bulletin of the Institute of Jamaica, Science Series', 1],
    ['Mitteilungen aus dem Zoologischen Museum in Berlin', 4],
    ['New Zealand journal of zoology', 3],
    ['Records of the Western Australian Museum', 2],
    ['Revista Ibérica de Aracnología', 1],
    ['Revue suisse de Zoologie', 4],
    ['Zootaxa', 5],
    ['carolinea', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=26)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);