function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Burret, Max', 16],
    ['Carvalho-Sobrinho, Jefferson & Yoshikawa, Vania Nobuko', 14],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 25],
    ['Gerace, Samuele & Bovini, Massimo G. & Peruzzi, Lorenzo', 20],
    ['Grings, Martin & Boldrini, Ilsi Iob', 27],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 17],
    ['Info Flora', 21],
    ['Jarvis, Charlie', 182],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 14],
    ['Lou, Kang & You, Wanxue & Huang, Zhilin & Li, Houhun', 27],
    ['Molino, Jean-François & Sabatier, Daniel & Grenand, Pierre', 41],
    ['Monteiro, Francisca & Costa, Esperança Da & Kissanga, Raquel', 33],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 32],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 36],
    ['de Carvalho-Sobrinho, Jefferson G. & Ramella, Lorenzo', 16],
    ['Other (160)', 346]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=867)',
    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);