function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dang, Li-Hong & Mound, Laurence A. & Qiao, Ge-Xia', 1],
    ['Dang, Li-Hong & Qiao, Ge-Xia', 2],
    ['Dang, Li-Hong & Zhao, Lin-Peng & Li, Yan-Qiao & Qiao, Ge-Xia', 6],
    ['Patidar, Abhishek & Singha, Devkant & Kumar, Vikas', 1],
    ['Tong, Xiaoli & Lau, Clive Siu-Ki & Zhao, Chao', 1],
    ['Wang, Chin-Ling & Lin, Feng-Chyi', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=17)',
    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);