function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annereaux, Ralph F.', 1],
    ['Byrd, Mitchell A.', 1],
    ['Lloyd, Lowell Clyde', 2],
    ['Machida, Masaaki', 2],
    ['Manter, Harold W.', 2],
    ['Manter, Harold W. & Pritchard, M. H.', 2],
    ['Margolis, Leo & Adams, J. R.', 1],
    ['Montgomery, William R.', 1],
    ['Nahhas, Fuad M. & Cable, Raymond M.', 1],
    ['Skrjabin, K. I. & Guschanskaja, L. H.', 1],
    ['Yamaguti, S.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    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);