function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dang, Li-Hong & Mound, Laurence A. & Qiao, Ge-Xia', 1],
    ['Moulton, Dudley', 1],
    ['Mound, Laurence A.', 2],
    ['Retana-Salazar, A. P.', 1],
    ['SHYAM, M. & JOHNSON, TH. & RACHANA, R. R. & VARATHARAJAN, R.', 2],
    ['Tyagi, Kaomud & Kumar, Vikas', 1],
    ['Wang, Chin-Ling & Lin, Feng-Chyi', 3],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=12)',
    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);