function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Becherer', 191],
    ['Brook, Fred J. & Kennedy, Martyn & King, Tania M.', 1],
    ['Chen, Ronglian & Zhang, Faqi & Chen, Shilong & Chi, Xiaofeng', 2],
    ['Evenhuis, Neal L. & O’Hara, James E. & Pape, Thomas', 1],
    ['Forshage, Mattias & Bowdrey, Jeremy & Broad, Gavin R.', 6],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 13],
    ['Howell, Nathan & Krings, Alexander & Braham, Richard R', 4],
    ['Info Flora', 12],
    ['Ito, Yu & Barfod, Anders S.', 32],
    ['Ito, Yu & Tanaka, Nobuyuki', 4],
    ['Jarvis, Charlie', 5],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 12],
    ['Linnaeus, Carolus', 2],
    ['Oliveira, Adriana & Bove, Claudia', 8],
    ['Zidorn, Christian', 4],
    ['Other (12)', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=309)',
    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);