function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['James H. Honacki & Kenneth E. Kinman & James W. Koeppl', 13],
    ['Kerbis Peterhans, Julian C. & Huhndorf, Michael H.', 1],
    ['Rainer Hutterer', 13],
    ['Russell A. Mittermeier & Don E. Wilson', 19],
    ['Taylor, Peter John & Kearney, Teresa Catherine', 2],
    ['Turni, Hendrik & Hutterer, Rainer & Asher, Robert', 1],
    ['Wilson, Don E. & Reeder, DeeAnn', 16]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=65)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);