function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bashir, Nawaz Haider & Li, Qiang & Ma, Li', 5],
    ['Bashir, Nawaz Haider & Ma, Li & Li, Qiang', 5],
    ['Gadallah, Neveen S. & Edmardash, Yusuf A.', 2],
    ['Madl, M.', 3],
    ['Pulawski, Wojciech J. & Gracy, Ramasamy Gandhi', 1],
    ['Rajan, Tessy & Sureshan, P. M. & Kumar, P. Girish', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=24)',
    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);