function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ancey, C. F.', 6],
    ['Baldwin, D. D.', 20],
    ['Borcherding, F.', 5],
    ['Gould, A. A.', 10],
    ['Guinea, Michael & Pilsbry, Henry A.', 23],
    ['Gulick, J. T.', 72],
    ['Gulick, J. T. & Smith, E. A.', 28],
    ['Newcomb, W.', 79],
    ['Paetel, F.', 6],
    ['Pease, W. H.', 10],
    ['Pfeiffer, L.', 62],
    ['Pilsbry, Henry A. & Cooke, C. Montague', 17],
    ['Reeve, Lovell A.', 12],
    ['Swainson, W.', 7],
    ['Sykes, E. R.', 7],
    ['Other (9)', 23]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=387)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);