function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Han, Yan-Feng & Ge, Wei & Zhang, Zhi-Yuan & Liang, Jian-Dong', 10],
    ['Li, Zhong & Zhang, Yan-Wei & Chen, Wan-Hao & Han, Yan-Feng', 2],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 2],
    ['Zhang, Yan-Wei & Chen, Wan-Hao & Zeng, Gui-Ping & Wang, Yu-Rong', 2],
    ['Zhang, Yan-Wei & Zeng, Gui-Ping & Zou, Xiao & Han, Yan-Feng', 2],
    ['Zhang, Zhi-Yuan & Han, Yan-Feng & Chen, Wan-Hao & Liang, Zong-Qi', 4],
    ['Zhang, Zhi-Yuan & Li, Xin & Chen, Wan-Hao & Liang, Jian-Dong', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);