function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bennett, Edward Turner', 1],
    ['Bleeker, Pieter', 6],
    ['Blosser, C. B.', 1],
    ['Borodin, N. A.', 1],
    ['Burgess, W. E.', 1],
    ['Cadenat, J.', 1],
    ['Cuvier, Georges & Valenciennes, A.', 8],
    ['De Vis, Charles Walter', 2],
    ['Desmarest, Anselme Gaëtan', 1],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 2],
    ['Rüppell, Wilhem Peter Eduard Simon', 2],
    ['Sauvage, H. E.', 3],
    ['Seale, A.', 2],
    ['Zarco Perello, Salvador & Moreno Mendoza, Rigoberto', 4],
    ['von Bonde, C.', 2],
    ['Other (15)', 15]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=52)',
    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);