function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aken\'Ova, Thelma & Cribb, Thomas & Bray, Rodney', 10],
    ['Aken’Ova, T. O. & Cribb, Thomas H. & Bray, Rodney A.', 8],
    ['Antar, Rym & Georgieva, Simona & Gargouri, Lamia', 2],
    ['Bartoli, Pierre & Bray, Rodney A. & Gibson, David Ian', 1],
    ['Bray, Rodney A.', 2],
    ['Bray, Rodney A. & Cribb, Thomas H.', 1],
    ['Bray, Rodney A. & Justine, Jean-Lou', 1],
    ['Laskowski, Zdzisław & Jezewski, Witold & Zdzitowiecki, Krzysztof', 1],
    ['Reimer, Lothar W.', 1],
    ['Rima, Mohammed & Marzoug, Douniazed & Pérez-del-Olmo, Ana', 1],
    ['Zdzitowiecki, Krzysztof', 3],
    ['Zdzitowiecki, Krzysztof & Cielecka, Danuta', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=33)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);