function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Freeman, Mary C. & Freeman, Byron J. & Burkhead, Noel M.', 1],
    ['James D. Williams & David A. Neely & Stephen J. Walsh', 7],
    ['Robert E. Schmidt & Robert A. Daniels', 1],
    ['Robert H. Robins & Lawrence M. Page', 2],
    ['Robins, Robert H. & Page, Lawrence M.', 1],
    ['Williams, James D. & Neely, David A. & Walsh, Stephen J.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);