function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Archiv für Naturgeschichte', 1],
    ['Colonial Museum and Geological Survey Department', 1],
    ['Denkschriften der Kaiserlichen Akademie der Wissenschaften, Wien', 1],
    ['Discovery Reports', 1],
    ['Ichthyological Bulletin of the J. L. B. Smith Institute of Ichthyology', 1],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 1],
    ['Proceedings of the California Academy of Sciences, Series 1', 1],
    ['Proceedings of the Linnean Society of New South Wales', 5],
    ['Records of the Australian Museum', 1],
    ['Report of the British Association for the Advancement of Science', 1],
    ['Revista Chilena de Historia Natural', 1],
    ['Zootaxa', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);