function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bongcheewin, Bhanubong & Ingrouille, Martin J. & Paton, Alan J.', 32],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 58],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 23],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 112],
    ['Info Flora', 130],
    ['Jarvis, Charlie', 362],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 104],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 30],
    ['Linnaeus, Carolus', 43],
    ['Meerts, Pierre', 66],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 16],
    ['Paton, Alan J. & Mwanyambo, Montfort & Govaerts, Rafael H. A.', 442],
    ['Reich, Dieter & Gutermann, Walter & Bardy, Katharina', 61],
    ['Thiébaut, Mélanie & Labussière, Florent', 27],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 61],
    ['Other (186)', 422]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=1989)',
    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);