function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andrews, A. P.', 1],
    ['Coleman, Rhys A. & Hoffmann, Ary A. & Raadik, Tarmo A.', 4],
    ['Delfin, F. T.', 2],
    ['Fulton, W.', 2],
    ['Johnston, R. M.', 4],
    ['Macleay, William John', 3],
    ['McDowall, R. M.', 5],
    ['McDowall, R. M. & Fulton, W.', 3],
    ['Ogilby, J. D.', 2],
    ['Philippi, R. A.', 4],
    ['Raadik, Tarmo A.', 28],
    ['Regan, C. T.', 2],
    ['Scott, E. O. G.', 5],
    ['Stokell, G.', 3],
    ['de Laporte Castelnau La Ferté-Sénectère, Francis L.', 3],
    ['Other (23)', 23]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=94)',
    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);