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', 1],
    ['Heller, Klaus-Gerhard & Baker, Ed & Ingrisch, Sigfrid', 20],
    ['Liu, Chun-Xiang & Heller, Klaus-Gerhard & Wang, Xue-Song', 15],
    ['Liu, Yun-Fei & Shen, Chu-Ze & Gong, Pu & Zhang, Ling', 6],
    ['MACHÁýKOVÁ, Lenka & FIKÁýEK, Martin', 1],
    ['Nagar, Rajendra & Swaminathan, Rajamani & Meena, Ashok Kumar', 2],
    ['Tan, Ming Kai & Abdul Wahab, Rodzay bin Haji', 1],
    ['Tan, Ming Kai & Japir, Razy & Chung, Arthur Y. C.', 1],
    ['Tan, Ming Kai & Kamaruddin, Khairul Nizam', 1],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=50)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);