function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adams, Henry', 1],
    ['Breure, Abraham S. H.', 99],
    ['Breure, Abraham S. H. & Ablett, Jonathan D.', 389],
    ['Breure, Abraham S. H. & Tardy, Emmanuel', 6],
    ['Breure, Abraham S. H. & Whisson, Corey S.', 14],
    ['Brook, Fred J. & Ablett, Jonathan D.', 4],
    ['Conrad, Timothy Abbot', 1],
    ['Hutton, T.', 1],
    ['Mighels, J. W.', 2],
    ['Neubauer, Thomas A.', 1],
    ['Pfeiffer, L.', 7],
    ['Reeve, Lovell A.', 1],
    ['Scopoli, Giovanni Antonio', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=527)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);