function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales du Musée du Congo Belge, Série 1, Zoologiques', 1],
    ['Annali del Museo Civico di Storia Naturale \' Giacomo Doria\'', 1],
    ['Annali del Museo Civico di Storia Naturale di Genova', 1],
    ['Anzeiger', 1],
    ['Bulletin de la Société Zoologique de France', 2],
    ['Bulletin of the Museum of Comparative Zoology at Harvard College, 3', 1],
    ['Cybium', 1],
    ['Jornal de Sciencias Mathematicas, Physicas e Naturaes', 1],
    ['Laurentius Salvius', 4],
    ['Monatsberichte der Akademie der Wissenschaft zu Berlin', 6],
    ['Mölleri apud Heineck et Faber', 1],
    ['Notes from the Leyden Museum', 1],
    ['Proceedings of the United States National Museum, 3', 1],
    ['Proceedings of the Zoological Society of London, B', 1],
    ['Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften, Mathematisch-Naturwissenschaften Classe', 2],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=27)',
    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);