function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Enderlein, Günther', 1],
    ['Ghramh, Hamed Ali', 1],
    ['Madl, M. & Achterberg, C. Van', 6],
    ['N. S & Ghahari, H. & F, Bassus & E, Camptothlipsis', 1],
    ['Sharkey, Michael & Yu, Dicky & van Noort, Simon', 1],
    ['Sharkey, Michael J. & Clutts, Stephanie A.', 5],
    ['Stevens, Nicholas B. & Austin, Andrew D. & Jennings, John T.', 2],
    ['Tucker, Erika M. & Sharkey, Michael J. & Stoelb, Stephanie A. C.', 4],
    ['van Achterberg, Cornelis & Long, Khuat Dang', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);