function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Becherer', 177],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 91],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 268],
    ['Info Flora', 331],
    ['Jarvis, Charlie', 577],
    ['Jonsell, B., Karlsson', 66],
    ['Klak, Cornelia & Hedderson, Terry A. & Linder, H. Peter', 57],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 261],
    ['Kuehn, U.', 115],
    ['Linnaeus, Carolus', 350],
    ['Mucina, Ladislav', 99],
    ['Rabeler, Richard K. & Wagner, Warren L.', 86],
    ['Reich, Dieter & Gutermann, Walter & Bardy, Katharina', 115],
    ['Sukhorukov, Alexander P. & Liu, Pei-Liang & Kushunina, Maria', 91],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 52],
    ['Other (288)', 1397]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=4133)',
    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);