function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahamada H. Saïd & Sabine Hennequin & Germinal Rouhan', 3],
    ['Blume, Carl Ludwig von', 3],
    ['Carmes, Amanda Angélica & Dechoum, Michele de Sá', 1],
    ['Christenhusz, Maarten J. M. & Zhang, Xian-Chun', 1],
    ['Christensen, Carl Frederick Albert', 1],
    ['Cremers, Georges & Aupic, Cécile', 3],
    ['Dubuisson, Jean-Yves & Nivart, Adele & Senterre, Bruno', 2],
    ['Jarvis, Charlie', 9],
    ['Matos, Fernando B. & Bohn, Amabily & Labiak, Paulo H.', 1],
    ['Mazumdar, Jaideep & Callmander, Martin W. & Fumeaux, Nicolas', 2],
    ['Presl, Karl B.', 1],
    ['Wijnands, Dirk Onno & Heniger, Johannes & Veldkamp, Jan Frederik', 1],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=31)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);