function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Boddaert, Pieter', 3],
    ['Forster, Johann Reinhold', 1],
    ['Jansen, Justin J. F. J.', 1],
    ['Kerr, Robert', 1],
    ['Kuhl, Heinrich', 1],
    ['Latham, John', 1],
    ['Linnaeus, Carolus', 38],
    ['Müller, Philipp Ludwig Statius', 3],
    ['Scopoli, Giovanni Antonio', 1],
    ['Shaw, George & Nodder, E.', 1],
    ['Temminck, Coenraad Jacob', 1],
    ['Voisin, Claire & Voisin, Jean-François', 27]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=79)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);