function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Airy Shaw, Herbert Kenneth', 6],
    ['Bollendorff, Sarah Marie & Welzen, Peter Cornelis van', 1],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 2],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 1],
    ['Lin, Yun & Bi, Hai-Yan & Sun, Jun & Sun, Qian', 2],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 1],
    ['Müller Argoviensis, Johannes', 2],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 1],
    ['Rechinger, Karl Heinz', 1],
    ['Simian, Gaëlle & Abraham, Daniel & Bailly, Nicolas', 1],
    ['Suh, Soo-Jung', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);