function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annalen des Naturhistorischen Museums in Wien, Serie B, Botanik und Zoologie', 1],
    ['Annali del Museo Civico di Storia Naturale di Genova', 1],
    ['Anzeiger', 2],
    ['Bulletin du Muséum National d’Histoire Naturelle, Série 2', 1],
    ['Check List', 2],
    ['Copeia', 3],
    ['Denkschriften der Kaiserlichen Akademie der Wissenschaften, Wien', 1],
    ['Ichthyological Exploration of Freshwaters', 1],
    ['Memoires de la Sociedad de Ciencias Naturales La Salle', 3],
    ['Memoirs of the Carnegie Museum', 1],
    ['Papéis Avulsos de Zoologia', 3],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 6],
    ['Proceedings of the Zoological Society of London, B', 4],
    ['Transactions of the Zoological Society of London', 2],
    ['Zootaxa', 12],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=49)',
    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);