function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anales de Instituto de Biología, Universidad Nacional Autónoma de México, Serie Zoologia', 1],
    ['Annals of the Lyceum of Natural History of New York', 2],
    ['Bulletin de la Société Philomathique de Paris, Série 8', 1],
    ['Bulletin of the Illinois State Museum of Natural History', 1],
    ['Bulletin of the United States Fish Commission', 1],
    ['Bulletin of the United States National Museum', 7],
    ['Ciencia, Mexico City', 2],
    ['Copeia', 1],
    ['Journal de Physique, de Chimie, d\'Histoire Naturelle et des Arts', 1],
    ['Monographs of the Academy of Natural Sciences of Philadelphia', 1],
    ['Neotropical Ichthyology', 1],
    ['Occasional Papers of the Museum of Zoology, University of Michigan', 2],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 1],
    ['Proceedings of the American Philosophical Society', 1],
    ['Zootaxa', 6],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=34)',
    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);