function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bai, Zilong & Li, Fengyuan & Li, Shuqiang', 11],
    ['Chang, Wan-Jin & Li, Fengyuan & Li, Shuqiang', 7],
    ['Chang, Wan-Jin & Li, Shuqiang', 64],
    ['Chang, Wan-Jin & Yao, Zhiyuan & Li, Shuqiang', 29],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 5],
    ['Li, FENGYUAN & LI, SHUQIANG & Jäger, Peter', 8],
    ['Liu, Chang & Li, Fengyuan & Li, Shuqiang & Zheng, Guo', 10],
    ['Tong, Yanfeng & Li, Shuqiang', 4],
    ['Xin, Yafei & Jiang, Tongyao & Yao, Zhiyuan & Li, Shuqiang', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=146)',
    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);