function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Algemeene Konst- en Letter-Bode', 1],
    ['An. Mus. Nac. Chile, Zool.', 1],
    ['Annals of the Queensland Museum', 1],
    ['Bulletin of the United States National Museum', 1],
    ['Calcutta Journal of Natural History, and Miscellany of the Arts and Sciences in India', 1],
    ['European Journal of Taxonomy', 4],
    ['Journal of the Academy of Natural Sciences of Philadelphia', 1],
    ['Memoirs of the Museum of Comparative Zoology, at Harvard College', 1],
    ['Proceedings of the Boston Society of Natural History', 1],
    ['Proceedings of the Linnean Society of New South Wales', 1],
    ['Proceedings of the United States National Museum, 3', 1],
    ['Rec. Albany Mus. Grahamstown', 1],
    ['Salviucci', 1],
    ['Schmerber', 1],
    ['Zootaxa', 12],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=30)',
    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);