function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Feng, Hui Zhe & Li, Cui Hua & Li, Xue Yu & Liu, Xiao', 1],
    ['Feng, Hui Zhe & Liu, Ming & Li, Xue Yu & Liu, Xiao & Liu, Lin', 1],
    ['Feng, Hui Zhe & Lu, Zhi Qiang & Han, Qingxiang & Shen, Henglun', 1],
    ['Feng, Hui Zhe & Ren, Yong Zhu Ci & He, Xuan & Han, Qing Xiang', 1],
    ['Feng, Hui Zhe & Tong, Yi & Wu, Lei & Gong, Yue Ning', 1],
    ['Feng, Hui Zhe & Ying, Zhao Yan & Hui, Bi Ming & Hui, Li Wen', 1],
    ['Feng, Hui Zhe & Yu, Miao & Fang, Hong Lin & Han, Qing Xiang', 1],
    ['Feng, Hui Zhe & Zhao, Yan Ying & Bi, Ming Hui & Li, Wen Hui', 1],
    ['Nguyen, Khang Sinh & Tanaka, Noriyuki & V. Averyanov, Leonid', 1],
    ['Suh, Soo-Jung', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=10)',
    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);