function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bleeker, Pieter', 20],
    ['Curtiss, A.', 2],
    ['Forsskål, Peter', 3],
    ['Günther, Albert Charles Lewis Gotthilf', 2],
    ['Jordan, David Starr & Evermann, Barton Warren', 2],
    ['Kaup, Johann Jakob', 3],
    ['Klunzinger, C. B.', 2],
    ['Lesueur, Charles Alexandre', 4],
    ['Osório, B.', 2],
    ['Peters, Wilhelm Carl Hartwig', 4],
    ['Richardson, John', 2],
    ['Risso, A.', 2],
    ['Rüppell, Wilhem Peter Eduard Simon', 7],
    ['Seale, A.', 2],
    ['Steindachner, F.', 3],
    ['Other (20)', 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);