function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Birula, Alexei A.', 1],
    ['Chamberlin, Ralph V.', 1],
    ['Gervais, F. L. Paul', 2],
    ['Harms, Danilo & Dupérré, Nadine', 10],
    ['Harvey, Mark S.', 2],
    ['Hewitt, John', 5],
    ['Hirst, Stanley', 4],
    ['Koch, Carl Ludwig', 10],
    ['Kraepelin, Karl', 14],
    ['Lawrence, Reginald Frederick', 2],
    ['Lichtenstein, A. A. H.', 3],
    ['Pavesi, Pietro', 2],
    ['Pocock, Reginald Innes', 20],
    ['Purcell, W. F.', 14],
    ['Simon, Eugène', 3],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=98)',
    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);