function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Fan, Yu & Wang, Long-Yuan & Zhang, Rui & Tang, Ming', 2],
    ['Fan, Yu & Zhang, Rui & Guo, Chun-Lan & Tang, Ming', 1],
    ['Li, Zhi & Zheng, Hai-Lei & Tang, Ming', 1],
    ['Liu, Yu-Lin & Zhu, Xin-Xin & Peng, Yu-Lan & Tang, Ming', 2],
    ['Tang, Ming & Ren, Chen & Chen, You-Sheng & Yang, Qin-Er', 1],
    ['Xu, Ying & Singh, Harsh & Tang, Ming', 1],
    ['Zhang, Rui & Liu, Yu-Lin & Tang, Ming', 2],
    ['Zhao, Liao-Chen & Chen, Ren & Yu, Zhi-Yong & Tang, Ming', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=11)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);