function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bai, Yukun & Lin, Lu & Pan, Meng & Fan, Xinlei', 7],
    ['Cao, Lingxue & Luo, Dun & Lin, Wu & Yang, Qin & Deng, Xiaojun', 6],
    ['Fan, Xinlei & Du, Zhuo & Bezerra, Jadson D. P. & Tian, Chengming', 15],
    ['Huang, Shengting & Xia, Jiwen & Zhang, Xiuguo & Sun, Wenxiu', 8],
    ['Jaklitsch, Walter M. & Voglmayr, Hermann', 20],
    ['Jia, Aoli & Chen, Baoyue & Lu, Hongyan & Xing, Yu & Li, Bin', 7],
    ['Jiang, Ning & Fan, Xin-Lei & Crous, Pedro W. & Tian, Cheng-Ming', 11],
    ['Jiang, Ning & Yang, Qin & Fan, Xin-Lei & Tian, Cheng-Ming', 8],
    ['Lambert, Christopher & Schweizer, Lena', 5],
    ['Rathnayaka, Achala R. & Chethana, K. W. Thilini', 7],
    ['Sun, Wenxiu & Huang, Shengting & Xia, Jiwen & Zhang, Xiuguo', 10],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 33],
    ['Yang, Qin & Fan, Xin-Lei & Guarnaccia, Vladimiro', 15],
    ['Yang, Qin & Jiang, Ning & Tian, Cheng-Ming', 11],
    ['Zhu, Haiyan & Pan, Meng & Bonthond, Guido & Tian, Chengming', 14],
    ['Other (39)', 76]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=253)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);