function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annali del Museo Civico di Storia Naturale \' Giacomo Doria\'', 1],
    ['Annali del Museo Civico di Storia Naturale di Genova', 1],
    ['Annals of the Natal Museum', 1],
    ['Aqu. aktuell', 1],
    ['Blätter für Aquarien- und Terrarien-Kunde', 1],
    ['Boston Journal of Natural History', 1],
    ['Bulletin de la Société Philomathique de Paris, Série 8', 1],
    ['Bulletin of the Buffalo Society of Natural Sciences', 1],
    ['Bulletin of the United States Fish Commission', 2],
    ['Memoirs of the Museum of Comparative Zoology, at Harvard College', 2],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 7],
    ['Proceedings of the United States National Museum, 3', 5],
    ['Zoologischer Anzeiger', 7],
    ['Zootaxa', 4],
    ['Öfversigt af Konglelige Vetenskaps-Akademiens Förhandlingar', 2],
    ['Other (13)', 13]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=50)',
    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);