function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Averyanov, Leonid V. & Nguyen, Van Canh & Truong, Ba Vuong', 3],
    ['Chen, Ronglian & Zhang, Faqi & Chen, Shilong & Chi, Xiaofeng', 20],
    ['Clements, Mark Alwin & Jones, David Lloyd', 1],
    ['Hu, Wenqi & Zhang, Qinghai & Chen, Guizhen & Zhu, Mengjia', 1],
    ['Jarvis, Charlie', 3],
    ['Ke, Shijie & Zhang, Cuili & Huang, Ye & Zheng, Qinyao', 1],
    ['Ke, Shijie & Zhu, Meng-Jia & Zhao, Xuewei & Liu, Ding-Kun', 1],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 1],
    ['Ormerod, Paul & Kurzweil, Hubert & Watthana, Santi', 17],
    ['Xu, Xinyu & Ding, Chang-Chun & Hu, Wenqi & Yu, Xia & Zheng, Yu', 1],
    ['Yu, Xia & Zeng, Meng-Yao & Chen, Gui-Zhen & Xu, Xin-Yu', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=50)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);