function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cope, E. D.', 2],
    ['Currie, P. J.', 1],
    ['Hunt, ReBecca K & Quinn, James H.', 2],
    ['Kenneth Carpenter & D. Bruce Young', 1],
    ['Lambe L. M.', 1],
    ['Marsh, O. C.', 4],
    ['Marsh, Othniel Charles', 2],
    ['Matthew, W. D., & Brown, B.', 9],
    ['Osborn, H. F.', 6],
    ['Rauhut, Oliver W. M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=29)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);