function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Diedrich, Cajus G.', 1],
    ['Don E. Wilson & Russell A. Mittermeier', 1],
    ['Evenhuis, Neal L. & Pape, Thomas', 1],
    ['Fourvel, Jean-Baptiste & Fosse, Philippe & Fernandez, Philippe', 1],
    ['Geraads, Denis', 1],
    ['Hayssen, Virginia & Noonan, Paula', 2],
    ['Jackson, Stephen M. & Jansen, Justin J. F. J.', 1],
    ['James H. Honacki & Kenneth E. Kinman & James W. Koeppl', 2],
    ['W. Christopher Wozencraft', 2],
    ['Wilson, Don E. & Reeder, DeeAnn', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);