function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Averyanov, Leonid V. & Ponert, Jan & Nguyen, Phi Tam', 20],
    ['Bentham, George', 5],
    ['Chen, Ronglian & Zhang, Faqi & Chen, Shilong & Chi, Xiaofeng', 24],
    ['Cribb, Phillip James', 9],
    ['Gilli, Alexander', 6],
    ['Hawkes, Alex Drum & Heller, Alfonse Henry', 16],
    ['Ormerod, Paul & Kurzweil, Hubert & Watthana, Santi', 84],
    ['Ormerod, Paul Abel', 10],
    ['Pignal, Marc & Laudereau, Christian & Laudereau, Pierre-Louis', 9],
    ['Pignal, Marc & Munzinger, Jérôme', 7],
    ['Reeve, Helen', 9],
    ['Reichenbach f., H. G.', 7],
    ['Ridley, Henry Nicholas', 9],
    ['Schlechter, Fridrich Richard Rudolf', 38],
    ['Smith, Johannes Jacobus', 110],
    ['Other (31)', 48]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=411)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);