function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Daenekas, Jana & Iliffe, Thomas M. & Yager, Jill', 1],
    ['Hartke, Tamara R. & Koenemann, Stefan & Yager, Jill', 1],
    ['Koenemann, Stefan & Iliffe, Thomas M. & Yager, Jill', 1],
    ['Lorentzen, Dörte & Koenemann, Stefan & Iliffe, Thomas M.', 1],
    ['Neiber, Marco T. & Hansen, Finja C. & Iliffe, Thomas M.', 3],
    ['Olesen, Jørgen & Meland, Kenneth & Glenner, Henrik', 2],
    ['Yager, Jill', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=10)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);