function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anales de la Universidad de Chile, Memorias Cientificas y Literarias', 1],
    ['Annale van die Suid-Afrikaanse Museum [Annals of the South African Museum]', 2],
    ['Anzeiger', 1],
    ['Archiv für Naturgeschichte', 1],
    ['Bulletin de l\'Institut Royal des Sciences Naturelles de Belgique', 1],
    ['Bulletin du Muséum National d’Histoire Naturelle, Série 2', 1],
    ['Comptes Rendus Biologies', 4],
    ['Copeia', 1],
    ['European Journal of Taxonomy', 5],
    ['Faune Tropicale', 1],
    ['Japanese Journal of Ichthyology', 1],
    ['Journal of Natural History', 4],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 7],
    ['Verslagen en Mededeelingen der Koninklijke Akademie van Wetenschappen. Afdeeling Natuurkunde', 2],
    ['Zootaxa', 11],
    ['Other (9)', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=52)',
    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);