function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blend, Charles K. & Karar, Yasser F. M. & Dronen, Norman O.', 3],
    ['Gupta, S. P. & Tandon, V. L.', 1],
    ['Hafeezullah, M.', 1],
    ['Hanson, Mary Louise', 2],
    ['Kurochkin, Y. V.', 1],
    ['Nagaty, H. F.', 1],
    ['Parukhin, A M', 1],
    ['Toman, Gerd', 1],
    ['Yamaguti, S.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);