function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Altuna, Álvaro', 4],
    ['Baron-Szabo, Rosemarie C.', 4],
    ['Cairns, S. D.', 14],
    ['Cairns, Stephen D. & Häussermann, Verena & Försterra, Günter', 4],
    ['Cairns, Stephen D. & Polonio, Virginia', 4],
    ['Filander, Zoleka N. & Kitahara, Marcelo V. & Cairns, Stephen D.', 17],
    ['Kitahara, Marcelo V. & Cairns, Stephen D. & Miller, David J.', 6],
    ['Lamarck, J. B. P. A. de M. de', 1],
    ['Moseley, Henry Nottidge', 6],
    ['Reyes, Javier & Santodomingo, Nadiezhda & Cairns, Stephen', 4],
    ['Schejter, L. & Genzano, G. & Pérez, C. D. & Acuña, F.', 2],
    ['Vaughan, T. W.', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=69)',
    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);