function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bennett, Edward Turner', 3],
    ['Bleeker, Pieter', 14],
    ['De Vis, Charles Walter', 2],
    ['Fréminville, C. P. P.', 3],
    ['Hamilton, F. Buchanan', 5],
    ['Klausewitz, Wolfgang', 2],
    ['Linnaeus, Carolus', 8],
    ['Lowe, R. T.', 2],
    ['Mitchill, S. L.', 3],
    ['Montrouzier, X.', 2],
    ['Poey, F.', 3],
    ['Popta, C. M. L.', 2],
    ['Regan, C. T.', 4],
    ['Rüppell, Wilhem Peter Eduard Simon', 4],
    ['de Laporte Castelnau La Ferté-Sénectère, Francis L.', 3],
    ['Other (21)', 21]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=81)',
    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);