function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Becherer', 25],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 44],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 27],
    ['Grings, Martin & Boldrini, Ilsi Iob', 27],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 43],
    ['Info Flora', 43],
    ['Jarvis, Charlie', 282],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 33],
    ['Linnaeus, Carolus', 70],
    ['Lou, Kang & You, Wanxue & Huang, Zhilin & Li, Houhun', 27],
    ['Molino, Jean-François & Sabatier, Daniel & Grenand, Pierre', 44],
    ['Monteiro, Francisca & Costa, Esperança Da & Kissanga, Raquel', 34],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 37],
    ['Tabell, Jukka & Kullberg, Jaakko & Mutanen, Marko', 64],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 41],
    ['Other (221)', 544]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=1385)',
    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);