function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Agassiz, Jean Louis Rodolphe', 1],
    ['Bailey, Reeve M.', 2],
    ['Gilbert, Charles H.', 3],
    ['Girard, Charles Frédéric', 1],
    ['Moenkhaus, W. J.', 1],
    ['Moore, G. A. & Reeves, J. D.', 1],
    ['Radcliffe, L. & Welsh, W. W.', 1],
    ['Raney, E. C. & Hubbs, Carl L.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=11)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);