function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Allen, Gerald R. Dr.', 9],
    ['Allen, Gerald R. Dr. & Cross, N. J.', 2],
    ['Allen, Gerald R. Dr. & Renyaan, S. J.', 5],
    ['Allen, Gerald R. Dr. & Unmack, Peter J. & Hadiaty, Renny K.', 1],
    ['Chan, Jeffery C. F. & Tsang, Alphonse H. F. & Yau, Sze-man', 1],
    ['Graf, Johannes A. & Herder, Fabian & Hadiaty, Renny K.', 1],
    ['Hammer, Michael P. & Allen, Gerald R. & Martin, Keith C.', 3],
    ['Herre, Albert W. C. T.', 1],
    ['McGuigan, K. L.', 1],
    ['Morgan, David L. & Allen, Gerald R. & Pusey, Bradley J.', 5],
    ['Munro, I. S. R.', 1],
    ['Ogilby, J. D.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=31)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);