function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bian, Xun', 1],
    ['Bian, Xun & Liu, Jing & Yang, Zizhong', 2],
    ['He, Zhu-Qing & Yin, Zi-Xu & Hu, Tian-Hao & Huo, Qing-Bo', 1],
    ['Ingrisch, Sigfrid', 5],
    ['Li, Miao-Miao & Fang, Yan & Liu, Xian-Wei & Li, Kai', 13],
    ['Li, Miaomiao & Liu, Xianwei & Li, Kai', 6],
    ['Pang, Siyu & Zhang, Qianwen & Bian, Xun', 2],
    ['Tan, Ming Kai & Abdul Wahab, Rodzay bin Haji', 1],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 1],
    ['Yin, Zi-Xu & Wang, Guo-Li & Shen, Zi-Hao', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);