function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chen, Ya-Ping & Xiao, Jin-Fei & Xiang, Chun-Lei & Li, Xiong', 1],
    ['Guo, Guo-Xin & Zhao, Wan-Yi & Chen, Ya-Ping & Xiao, Jin-Hai', 1],
    ['Ko, Sung Chul & Lee, You-Mi & Son, Kyong-Sook Chung Dong Chan', 1],
    ['Yuan, Jing-Chen & Chen, Ya-Ping & Zhao, Yue & Li, Hai-Bo', 1],
    ['Zhang, Ren-Bo & Deng, Tan & Dou, Quan-Li & Wei, Ruo-Xun', 1],
    ['Zhao, Wan-Yi & Zhang, Zhong & Fan, Qiang & Chen, Chun-Quan', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=6)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);