function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abotsi, Komla Elikplim & Kokou, Kouami & Dubuisson, Jean-Yves', 2],
    ['Abotsi, Komla Elikplim & Radji, Aboudou R. & Rouhan, Germinal', 2],
    ['Blume, Carl Ludwig von', 1],
    ['Callmander, Martin W. & Mazumdar, Jaideep & Jarvis, Charles E.', 4],
    ['Christenhusz, Maarten J. M. & Zhang, Xian-Chun', 1],
    ['Cremers, Georges & Aupic, Cécile', 3],
    ['Jarvis, Charlie', 1],
    ['Maddi, Franck A. & Cremers, Georges', 1],
    ['Matos, Fernando B. & Bohn, Amabily & Labiak, Paulo H.', 1],
    ['Mazumdar, Jaideep & Callmander, Martin W. & Fumeaux, Nicolas', 1],
    ['Wijnands, Dirk Onno & Heniger, Johannes & Veldkamp, Jan Frederik', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);