function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Colin P. Groves', 13],
    ['Gregorin, Renato & Vivo, Mario De', 1],
    ['Heymann, Eckhard W', 1],
    ['James H. Honacki & Kenneth E. Kinman & James W. Koeppl', 11],
    ['Russell A. Mittermeier & Anthony B. Rylands & Don E. Wilson', 20],
    ['Rylands, Anthony B. & Heymann, Eckhard W.', 1],
    ['VOSS, ROBERT S. & LUNDE, DARRIN P. & SIMMONS, NANCY B.', 1],
    ['Voss, Robert S. & Fleck, David W.', 3],
    ['Wilson, Don E. & Reeder, DeeAnn', 30]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=81)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);