function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ashmead, William Harris', 1],
    ['Brues, Charles Thomas', 2],
    ['Buhl, Peter N. & Broad, Gavin R. & Notton, David G.', 4],
    ['Crawford, J. C.', 1],
    ['Ferrière, Ch.', 3],
    ['Fouts, Robert M.', 1],
    ['Ghahari, H. & Havaskary, M. & Tabari, M. & Ostovan, H.', 4],
    ['Kieffer, Jean-Jacques A.', 3],
    ['Madl, Michael', 20],
    ['Nixon, G. E. J.', 11],
    ['Priesner, H.', 3],
    ['Timberlake, P. H.', 2],
    ['Walker, Francis', 2],
    ['Yoder, Matthew & Polaszek, Andrew & Masner, Lubomir', 20],
    ['Yoder, Matthew J. & Valerio, Alejandro A. & Polaszek, Andrew', 60],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=144)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);