function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Candolle, Anne Casimir Pyramus de', 18],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 4],
    ['Gardner, George', 2],
    ['Gibbs, Lilian Suzette', 3],
    ['Jaramillo, M. Alejandra & Rodriguez-Duque, Dayro', 3],
    ['Jarvis, Charlie', 13],
    ['Linnaeus, Carolus', 17],
    ['Maia, Valéria Cid & Mascarenhas, Bernardo', 7],
    ['Molino, Jean-François & Sabatier, Daniel & Grenand, Pierre', 3],
    ['Rechinger, Karl Heinz', 4],
    ['Royen, Pieter van', 3],
    ['Trujillo, William & Jaramillo, M. Alejandra & Toro, Diego', 7],
    ['Trujillo, William & Trujillo, Edwin Trujillo', 4],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 2],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 2],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=99)',
    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);