function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bitner, Maria Aleksandra', 4],
    ['Bitner, Maria Aleksandra & Lozouet, Pierre & Cahuzac, Bruno', 1],
    ['Hoffmann, Jana & Klann, M. & Matz, F.', 1],
    ['Hoffmann, Jana & Lüter, Carsten', 3],
    ['Lee, Daphne E. & Robinson, J. H.', 1],
    ['Logan, Alan & Bitner, Maria Aleksandra', 6],
    ['Logan, Alan & Hoffmann, Jana & Lüter, Carsten', 4],
    ['LÜTER, CARSTEN & WÖRHEIDE, GERT & REITNER, JOACHIM', 2],
    ['Lüter, Carsten', 1],
    ['Lüter, Carsten & Hoffmann, Jana & Logan, Alan', 2],
    ['Robinson, Jeffrey H.', 1],
    ['Simon, Eric & Hiller, Norton & Logan, Alan', 5],
    ['Simon, Eric & Hoffmann, Jana', 9],
    ['Simon, Eric & Lüter, Carsten & Logan, Alan & Mottequin, Bernard', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=52)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);