function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Deng, Huaiqing & Wen, Huamei & Xiao, Ning & Zhou, Jiang', 1],
    ['Deng, Huaiqing & Xiao, Ning & Hou, Xiufa & Zhou, Jiang', 1],
    ['Du, Li-Na & Chen, Xiao-Yong & Yang, Jun-Xing', 8],
    ['Huang, Jin-Qing & Yang, Jian & Wu, Zhi-Qiang & Zhao, Ya-Hui', 7],
    ['Lan, J. - H. & Yang, J. - X. & Chen, Y. - R.', 1],
    ['Luo, Xue-Ming & Yang, Rui-Gang & Du, Li-Na & Luo, Fu-Guang', 1],
    ['Ye, Enqi & Xing, Yingchun & Zhang, Chunguang & Zhao, Yahui', 3],
    ['Yu, Jing & Luo, Tao & Lan, Chang-Ting & Zhou, Jia-Jun', 1],
    ['Zheng, P. - S.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=24)',
    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);