function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Burman, Nicolaas Laurens', 1],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 1],
    ['Essl, F. & A, Lower & A, Lower', 1],
    ['Essl, F. & Stöhr, O.', 1],
    ['Faden, Robert B.', 2],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 2],
    ['Info Flora', 1],
    ['Jarvis, Charlie', 7],
    ['Linnaeus, Carolus', 9],
    ['Maldonado-Moreno, Claudia & Alvarez-Jiménez, Abel De Jesús', 2],
    ['Monteiro, Francisca & Costa, Esperança Da & Kissanga, Raquel', 3],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 5],
    ['Oliveira, Adriana & Bove, Claudia', 6],
    ['Pellegrini, Marco Octavio de Oliveira', 9],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 9],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=64)',
    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);