function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Qian, Chang-Yuan & Bu, Yun & Dong, Yan & Luan, Yun-Xia', 2],
    ['Qian, Changyuan & Chu, Kelin & Liu, Xiaorui & Sun, Hongying', 1],
    ['Qian, Changyuan & Dong, Yan & Bernard, Ernest C. & Sun, Hongying', 3],
    ['Qian, Changyuan & Dong, Yan & Guo, Hua & Chu, Kelin', 5],
    ['Scheller, Ulf', 79],
    ['Scheller, Ulf & Barratt, Barbara Ingeborg Patricia', 2],
    ['Scheller, Ulf & Fjellberg, Arne', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=93)',
    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);