function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chand, D. Suresh & Das, Swapan Kumar & Kumar, Hirdesh', 1],
    ['Gupta, Sunil Kumar & Chandra, Kailash', 2],
    ['Hollier, John', 5],
    ['Kumar, Hirdesh & Chand, D. Suresh & Raghunathan, C.', 2],
    ['Nagar, Rajendra & Swaminathan, Rajamani & Meena, Ashok Kumar', 7],
    ['Shah, Muzamil Syed & Usmani, Mohd Kamil', 3],
    ['Sri-In, Chalida & Yang, Jeng-Tze', 3],
    ['Swezey, O. H.', 1],
    ['Tan, Ming Kai & Japir, Razy & Chung, Arthur Y. C.', 1],
    ['Tiwari, Chandranshu & Diwakar, Swati', 6],
    ['Wang, Jian-Feng & Shi, Fu-Ming & Ou, Xiao-Hong', 6],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=38)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);