function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Liu, Xingyue', 8],
    ['Liu, Xingyue & Li, Di & Yang, Zizhong', 3],
    ['Makarkin, Vladimir N. & Ansorge, Jörg & Khramov, Alexander V.', 4],
    ['Makarkin, Vladimir N. & Archibald, Bruce', 2],
    ['Makarkin, Vladimir N. & Wedmann, Sonja & Weiterschan, Thomas', 2],
    ['Walker, Francis', 1],
    ['Xu, Yifan & Zheng, Bingyu & Fang, Hui & Shih, Chungkun', 4],
    ['Yang, Qiang & Shi, Chaofan & Pang, Hong & Ren, Dong', 2],
    ['Zheng, Bingyu & Ren, Dong & Wang, Yongjie', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=28)',
    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);