function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bayer, Steffen & Jäger, Peter', 4],
    ['Dean, David Allen', 1],
    ['Eusemann, Pascal & Jäger, Peter', 1],
    ['Jaeger, Peter', 1],
    ['Jäger, Peter', 5],
    ['Jäger, Peter & Vedel, Vincent', 1],
    ['Li, Jian Long & Jäger, Peter & Liu, Jie', 1],
    ['Liu, Jie & Li, Shuqiang & Jäger, Peter', 1],
    ['ZONSTEIN, SERGEI & MARUSIK, YURI M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    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);