function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alleyne, H. G. & Macleay, William John', 1],
    ['Bennett, Edward Turner', 1],
    ['Bleeker, Pieter', 13],
    ['Boulenger, George Albert', 1],
    ['Cope, Edward Drinker', 4],
    ['Gilchrist, J. D. F. & Thompson, W. Wardlaw', 1],
    ['Günther, Albert Charles Lewis Gotthilf', 2],
    ['Herzenstein, S. M.', 2],
    ['Hollard, H. L. G. M.', 4],
    ['Macleay, William John', 2],
    ['Montrouzier, X.', 2],
    ['Poey, F. & Manday, D. Guitart', 2],
    ['Ranzani, C.', 3],
    ['Rüppell, Wilhem Peter Eduard Simon', 2],
    ['de Laporte Castelnau La Ferté-Sénectère, Francis L.', 6],
    ['Other (12)', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=58)',
    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);