function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bian, Xun & Liu, Jing & Yang, Zizhong', 2],
    ['Du, Baojie & Bian, Xun & Shi, Fuming', 8],
    ['Duan, Yanhao & Su, Jie & Zhang, Wenxiang & Shi, Fuming', 3],
    ['Duan, Yanhao & Zhang, Tao & Shi, Fuming', 5],
    ['Ingrisch, Sigfrid', 6],
    ['Li, Yanqing & Dou, Yujie & Shi, Fuming', 1],
    ['Liu, Jing & Lu, Xiangyi & Bian, Xun', 1],
    ['Liu, Jing & Yang, Dongdong & Bian, Xun', 4],
    ['Lu, Xiangyi & Zhang, Qianwen & Bian, Xun', 5],
    ['Pang, Siyu & Zhang, Qianwen & Bian, Xun', 3],
    ['Shi, Fu-Ming & Guo, Li-Ying & Bian, Xun', 8],
    ['Zhang, Qianwen & Liu, Mingyu & Bian, Xun', 2],
    ['Zhang, Qianwen & Pang, Siyu & Bian, Xun', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=50)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);