function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Heller, Kai & Rulik, Bjoern', 4],
    ['Köhler, Arne & Menzel, Frank', 1],
    ['Menzel, Frank & Gammelmo, Oivind & Olsen, Kjell Magne', 2],
    ['Menzel, Frank & Smith, Jane E. & Chandler, Peter J.', 1],
    ['Sutou, Mitsuaki & Ito, Masamichi T.', 4],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1],
    ['Vilkamaa, Pekka & Hippa, Heikki & Mohrig, Werner', 9],
    ['Wu, Hong & Zhang, Su-Jiong & Huang, Junhao', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=30)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);