function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chen, Liusheng & Owada, Mamoru & Wang, Min & Long, Yang', 7],
    ['Das, Apurva & Singh, Navneet', 4],
    ['Huang, Si-Yao & Hou, Yong-Xiang & Zhu, Li-Juan & Chen, Liu-Sheng', 1],
    ['Huang, Siyao & Hou, Yongxiang & Zhu, Lijuan & Xu, Yongqiang', 2],
    ['Liao, Cheng-Qing & Chen, Liu-Sheng & Huang, Guo-Hua', 2],
    ['Lv, Jun-Xian & Wang, Xing & Huang, Guo-Hua', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    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);