function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bieler, Rüdiger & Mikkelsen, Paula M.', 1],
    ['Blake, Joseph (Rev.)', 1],
    ['Born, Ignaz von', 1],
    ['Cavallari, Daniel C. & Dornellas, Ana Paula S.', 1],
    ['Da Costa, Emanuel Mendes', 1],
    ['Dall, William Healey', 3],
    ['DeVries, Thomas J.', 2],
    ['Lamarck, J. B. P. A. de M. de', 1],
    ['Lightfoot, John', 1],
    ['Linnaeus, Carolus', 16],
    ['Makiyama, Jirô', 3],
    ['Negri, Mauro Pietro & Corselli, Cesare', 3],
    ['Ortega, José Rafael & Gofas, Serge', 2],
    ['Smith, Edgar A.', 14],
    ['Valentich-Scott, Paul & Garfinkle, Elizabeth A. R.', 2],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=60)',
    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);