function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baird, S. F. & Girard, Charles Frédéric', 1],
    ['Carr, A. F.', 1],
    ['Day, F.', 1],
    ['Fowler, Henry Weed', 1],
    ['Gaillard, C.', 1],
    ['Gianferrari, L.', 3],
    ['Girard, Charles Frédéric', 2],
    ['Guichenot, A.', 1],
    ['Hamilton, F. Buchanan', 1],
    ['Holly, M.', 1],
    ['Hubbs, Carl L. & Miller, R. R.', 1],
    ['Jenkins, J. T.', 2],
    ['Leidenfrost, G.', 2],
    ['Miller, R. R.', 6],
    ['Minckley, W. L. & Miller, R. R. & Norris, S. M.', 3],
    ['Other (13)', 13]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    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);