function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Komal, J. & Shashank, P. R. & Sondhi, Sanjay & Madan, Sohail', 1],
    ['Singh, Navneet & Joshi, Rahul & Kirti, Jagbir Singh', 16],
    ['Witt, Thomas & Günter, G. C. & Kravchenko, V. D.', 1],
    ['Zhang, Yulong & Huang, Siyao & Wang, Min', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 4, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);