function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adams, Arthur', 1],
    ['Albano, Paolo G. & Bakker, Piet A. J. & Janssen, Ronald', 2],
    ['Dekker, Aart M. & Herrmann, M & Poppe, Guido & Tagaro, Sheila', 3],
    ['Harzhauser, Mathias & Landau, Bernard', 46],
    ['Huang, Shih-I', 5],
    ['Huang, Shih-I & Salisbury, Richard', 7],
    ['Lamarck, J. B. P. A. de M. de', 5],
    ['Pease, W. H.', 2],
    ['Poppe, Guido', 7],
    ['Poppe, Guido & Salisbury, Richard & Tagaro, Sheila', 2],
    ['Poppe, Guido & Tagaro, Sheila', 6],
    ['Poppe, Guido & Tagaro, Sheila & Salisbury, R.', 21],
    ['Röding, Peter Friedrich', 2],
    ['Sacchetti, Claudia & Landau, Bernard & Ávila, Sérgio P.', 5],
    ['Turner, Hans', 4],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=125)',
    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);