function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bangs, Outram', 4],
    ['Boitard, Pierre', 3],
    ['Brass, E.', 1],
    ['Coues, Elliott', 1],
    ['Desmarest, Anselme Gaëtan', 1],
    ['Don E. Wilson & Russell A. Mittermeier', 2],
    ['García-Prieto, Luis & Falcón-Ordaz, Jorge', 3],
    ['Geoffroy Saint-Hilaire, E. & Cuvier, Georges', 1],
    ['Gray, John Edward', 1],
    ['James H. Honacki & Kenneth E. Kinman & James W. Koeppl', 3],
    ['Mearns, Edgar A.', 1],
    ['Merriam, Clinton Hart', 1],
    ['W. Christopher Wozencraft', 3],
    ['Wilson, Don E. & Reeder, DeeAnn', 12],
    ['Álvarez-Córdova, Fernando & Fernández, Jesús A.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=39)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);