function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alexandre P. Marceniuk & Naércio A. Menezes', 3],
    ['Bleeker, Pieter', 5],
    ['Blyth, E.', 3],
    ['Boulenger, George Albert', 1],
    ['Dybowski, B. I.', 1],
    ['Gianferrari, L.', 1],
    ['Gill, T. N.', 1],
    ['Guimarães, A. R. P.', 1],
    ['Günther, Albert Charles Lewis Gotthilf', 1],
    ['Jerdon, T. C.', 3],
    ['Kner, R.', 4],
    ['Pellegrin, J.', 4],
    ['Richardson, John', 3],
    ['Steindachner, F.', 2],
    ['Sykes, W. H.', 2],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=43)',
    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);