function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Hu, Yan-Qing & Wang, Min & Han, Hui-Lin', 3],
    ['Huang, Zhen-Fu & Yu, Yong & Hu, Yan-Qing', 9],
    ['Joshi, Rahul & Singh, Navneet & Kuni, Nikhil', 5],
    ['László, Gyula M. & Sterling, Mark', 2],
    ['Zhang, Huan & Zhang, Wei-Zhong & Guo, Zhen-Yu & Yu, Yong', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);