function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cai, Jia-Hua & Shui, Yu-Min & Song, Xiao-Fei & Wu, Lei', 1],
    ['Pan, Bo & Ma, Hu-Sheng & Wang, Rui-Jiang', 1],
    ['Song, Xiao-Fei & Liu, Wen-Jian & Chen, Ao-Xue & Yao, Zheng-Ming', 1],
    ['Tong, Yi-Hua & Xia, Nian-He & Wu, Lei & Vu, Tien Chinh', 3],
    ['Wen, Haizhen & Wang, Ruijiang & Deng, Shujun', 1],
    ['Wen, Zhao-Jie & Huang, Yun-Fen & Hu, Yan-Hua', 1],
    ['Wu, Lei & Li, Xiong & Liu, Wen-Jian & Liu, Quan-Ru', 1],
    ['Wu, Lei & Liu, Cheng & Song, Xiao-Fei & Chen, You-Sheng', 1],
    ['Wu, Lei & Wang, Bing-Mou & Pan, Bo & Yu, Xun-Lin', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=11)',
    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);