function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chen, Hui-Ming & Zhu, Ming-Sheng', 4],
    ['Huber, Bernhard A.', 7],
    ['Huber, Bernhard A. & Meng, Guanliang & Clark, Huon L.', 1],
    ['Lin, Yejie & Marusik, Yuri M. & Gao, Caixia & Xu, Hao', 2],
    ['Pham, Dinh-Sac', 2],
    ['Tong, Yanfeng & Li, Shuqiang', 9],
    ['Yang, Lan & Zhao, Fangyu & He, Qiaoqiao & Yao, Zhiyuan', 2],
    ['Yao, Zhiyuan & Li, Shuqiang', 9],
    ['Yao, Zhiyuan & Li, Shuqiang & Jäger, Peter', 2],
    ['Yao, Zhiyuan & Tavano, Maria & Li, Shuqiang', 1],
    ['Zhang, Feng & Peng, Yan-Qiu', 12],
    ['Zhao, Fangyu & Yang, Lan & Li, Shuqiang & Zheng, Guo', 5],
    ['Zhao, Xiaochu & Yao, Zhiyuan & Song, Yang & Li, Shuqiang', 3],
    ['Zhu, Wenhui & Li, Shuqiang', 10],
    ['Zhu, Wenhui & Yao, Zhiyuan & Zheng, Guo & Li, Shuqiang', 17]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=86)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);