function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Birula, Alexei A.', 24],
    ['Butler, Arthur Gardiner', 1],
    ['Dufour, L.', 8],
    ['Erdek, Melek', 2],
    ['Harms, Danilo & Dupérré, Nadine', 6],
    ['Harvey, Mark S.', 11],
    ['Heymons, R.', 1],
    ['Hirst, Stanley', 7],
    ['Hutton, T.', 1],
    ['Koch, Carl Ludwig', 4],
    ['Kraepelin, Karl', 3],
    ['Lucas, Hippolyte', 2],
    ['Pocock, Reginald Innes', 15],
    ['Putnam, J. Duncan', 1],
    ['Simon, Eugène', 7],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=99)',
    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);