function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dupérré, Nadine & Tapia, Elicio', 2],
    ['Forster [duplicate entry - do not register!], R. R.', 1],
    ['Kropf, C.', 1],
    ['LIN, YUCHENG & LI, SHUQIANG & JÄGER, PETER', 1],
    ['Lucien Berland', 2],
    ['Ono', 1],
    ['Platnick, N. I & M. U. Shadab', 7],
    ['Simon, Eugène', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);