function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Yamani, F. & Nahhas, Fuad M.', 1],
    ['Arai, Hisao P.', 1],
    ['Fischthal, Jacob H. & Thomas, J. D.', 1],
    ['Gupta, Rahul & Johri, Samta & Chandra, Satish & Saxena, A. M.', 2],
    ['Gupta, S. P. & Gupta, R. C.', 1],
    ['Gupta, V. & Ahmad, J.', 1],
    ['Gupta, V. & Puri, M.', 1],
    ['Johnston, S. J.', 1],
    ['Manter, Harold W. & Van Cleave, H. J.', 1],
    ['Parona, Corrado', 1],
    ['Parukhin, A M', 1],
    ['Saxena, A. M. & Johri, Samta & Gupta, Rahul', 1],
    ['Shen, J. - w.', 2],
    ['Yamaguti, S.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=17)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);