function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Li, Rongtao & Wang, Zhiwei & Wang, Jun & Zhu, Xinxin & Xu, Han', 1],
    ['Nguyen, Quoc Binh & Nguyen, Hieu Cuong & Tran, Duc Binh', 3],
    ['Wang, Jun & Li, Guo-Dong & Yang, Juan-Juan & Shen, Bin', 1],
    ['Wang, Jun & Ya, Ji-Dong & Liu, Cheng & Liu, Guang & Cao, Feng', 1],
    ['Xu, Lian-Sheng & Li, Tian & Xu, Ye-Chun & Chen, You-Sheng', 1],
    ['Zhu, Xin Xin & Zheng, Hai Lei & Wang, Jun & Gao, Yong Qian', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=8)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);