function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ho, George Waichun & Shi, Fuming', 3],
    ['Ho, Wai-Chun George', 2],
    ['Li, B. L. & Shi, F. M. & Wang, H. J.', 18],
    ['Liu, Yi-Fan & Yang, Sheng-Chuan & Gu, Jun-Jie & Wang, Hai-Jian', 3],
    ['Qian, Yu-Han & Xie, Chong-Xin & Wen, Jun & Wang, Yu', 1],
    ['Xie, Chong-Xin & Wen, Jun & Chen, Wang & Wang, Zhao-Zi', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=29)',
    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);