function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Airy Shaw, Herbert Kenneth', 6],
    ['Cardiel, José María & Muñoz-Rodríguez, Pablo', 100],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 2],
    ['Fosberg, Francis Raymond', 2],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 2],
    ['Info Flora', 2],
    ['Jarvis, Charlie', 5],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 2],
    ['Montero-Munoz, Iris & Levin, Geoffrey A.', 2],
    ['Montero-Munoz, Iris & Levin, Geoffrey A. & Cardiel, Jose M.', 4],
    ['Munoz, Iris Montero & Cardiel, Jose Maria & Levin, Geoffrey A.', 35],
    ['Muñoz, Iris Montero & Levin, Geoffrey A. & Cardiel, José María', 57],
    ['Muñoz-Rodríguez, Pablo & Cardiel, José María & Atha, Daniel', 29],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 2],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 3],
    ['Other (9)', 10]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=263)',
    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);