function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Agrawal, V.', 1],
    ['Bashirullah, A. K. M. & Elahi, K. M.', 2],
    ['Bhadauria, S. & Dandotia, M. R.', 1],
    ['Bilqees, Fatima Mujib & Khan, Aly', 1],
    ['Chandra, K. J. & Banerjee, M.', 1],
    ['Coil, William H. & Kuntz, Robert E', 1],
    ['Dwivedi, M. P.', 1],
    ['Gupta, S. P. & Chakrabarti, K. K.', 1],
    ['Hafizuddin, A. K. M. & Khan, H. R.', 1],
    ['Kakaji, V. L.', 2],
    ['Ozaki, Yoshimasa', 1],
    ['Pardeshi, P. R. & Hiware, C. J.', 1],
    ['Rehana, R. & Bilqees, Fatima Mujib', 1],
    ['Shaikh, G. S. & Khan, Aly & Bilqees, Fatima Mujib', 1],
    ['Yamaguti, S.', 2],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=25)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);