function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chen, Wen-Hong & Guo, Shi-Wei & Nguyen, Hieu Quang & Chen, Li', 1],
    ['Deng, Tan & Wen, Fang & Xie, Da-Jun & Wei, Ruo-Xun & He, Lin', 1],
    ['Guo, Zhiyou & Wu, Zhaowen & Xu, Weibin & Li, Zhenyu', 1],
    ['He, De-Ming & Feng, Yan-Fei & Pan, Fu-Zhuan & Hong, Xin', 1],
    ['Shui, Yu-Min & Guo, Shi-Wei & Chen, Li & Chen, Wen-Hong', 2],
    ['Wen, Fang & Hong, Xin & Chen, Ling-Yun & Zhou, Shou-Biao', 1],
    ['Xu, Wei-Bin & Huang, Yu-Song & Wei, Guo-Fu & Tan, Wei-Ning', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=8)',
    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);