function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Grall, Elena & Jäger, Peter', 65],
    ['Hirst, David B.', 21],
    ['Jiang, Tongyao & Zhao, Qingyuan & Li, Shuqiang', 17],
    ['Jäger, Peter', 101],
    ['Jäger, Peter & Vedel, Vincent', 23],
    ['Liu, Jie & Li, Shuqiang & Jäger, Peter', 15],
    ['Moradmand, Majid', 51],
    ['Moradmand, Majid & Jäger, Peter', 22],
    ['Rheims, Cristina A.', 99],
    ['Rheims, Cristina A. & Alayón, Giraldo', 15],
    ['Rheims, Cristina A. & Jäger, Peter', 26],
    ['Rheims, Cristina Anne', 20],
    ['Rheims, Cristina Anne & Alayón, Giraldo', 33],
    ['Zhang, He & Zhu, Yang & Zhong, Yang & Jäger, Peter & Liu, Jie', 121],
    ['Zhong, Yang & Jäger, Peter & Chen, Jian & Liu, Jie', 28],
    ['Other (61)', 188]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=845)',
    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);