function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annals of the Carnegie Museum', 7],
    ['Annals of the Lyceum of Natural History of New York', 3],
    ['Bulletin of the Museum of Comparative Zoology at Harvard College, 3', 1],
    ['Field Columbian Museum Zoological Series', 1],
    ['Memoirs of the Museum of Comparative Zoology, at Harvard College', 3],
    ['Notulae Naturae', 1],
    ['Noved. Cient. Mus. Hist. Nat. La Salle, Zool.', 1],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 2],
    ['Proceedings of the American Philosophical Society', 1],
    ['Proceedings of the United States National Museum, 3', 3],
    ['Senckenbergiana Biologica', 2],
    ['Tropical Fish Hobbyist', 2],
    ['Wochenschrift für Aquarien- und Terrarienkunde', 1],
    ['Zoologische Abhandlungen des Staatlichen Museums für Tierkunde, Dresden', 1],
    ['aqua, International Journal of Ichthyology', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=30)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);