function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Venezuelica', 1],
    ['Annalen des Naturhistorischen Museums in Wien', 6],
    ['Annals of the Carnegie Museum', 3],
    ['Annals of the Lyceum of Natural History of New York', 1],
    ['Anzeiger', 1],
    ['Archiv für Naturgeschichte', 2],
    ['Check List', 3],
    ['European Journal of Taxonomy', 8],
    ['Historia Natural', 2],
    ['Ichthyological Exploration of Freshwaters', 7],
    ['Neotropical Ichthyology', 19],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 3],
    ['Proceedings of the American Philosophical Society', 2],
    ['University of Amsterdam', 7],
    ['Zootaxa', 9],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=82)',
    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);