function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bariche, Michel & Fricke, Ronald', 1],
    ['Bennett, Edward Turner', 1],
    ['Bleeker, Pieter', 5],
    ['Carneiro, Miguel & Martins, Rogélia & Landi, Monica', 2],
    ['Cope, Edward Drinker', 1],
    ['Girard, Charles Frédéric', 2],
    ['Golani, Daniel', 2],
    ['Goode, G. B.', 1],
    ['Günther, Albert Charles Lewis Gotthilf', 1],
    ['Klunzinger, C. B.', 1],
    ['Lesueur, Charles Alexandre', 3],
    ['Nurettin Meriç & Lütfiye Eryilmaz & Müfit Özulug', 2],
    ['Rüppell, Wilhem Peter Eduard Simon', 2],
    ['Steindachner, F.', 3],
    ['van Hasselt, Johan Coenraad', 2],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=36)',
    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);