function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blume, Carl Ludwig von', 1],
    ['Callmander, Martin W. & Phillipson, Peter B.', 8],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 3],
    ['Jarvis, Charlie', 4],
    ['Kanehira, Ryozo & Hatusima, Sumihiko', 1],
    ['Martin W. Callmander & Peter B. Phillipson & George E. Schatz', 1],
    ['Meerts, Pierre', 27],
    ['Molino, Jean-François & Sabatier, Daniel & Grenand, Pierre', 5],
    ['Monteiro, Francisca & Costa, Esperança Da & Kissanga, Raquel', 1],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 3],
    ['Niccolini, Gabriele & Martinetto, Edoardo & Lanini, Benedetta', 1],
    ['Phillipson, Peter B & Callmander, Martin W.', 1],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=58)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);