function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahl, E.', 10],
    ['Bennett, Edward Turner', 3],
    ['Bleeker, Pieter', 5],
    ['Bloch, Marcus Elieser & Schneider, J. G.', 3],
    ['Burgess, W. E.', 2],
    ['Curtiss, A.', 3],
    ['Cuvier, Georges & Valenciennes, A.', 22],
    ['Forsskål, Peter', 10],
    ['Fowler, Henry Weed', 2],
    ['Gray, John Edward', 2],
    ['Hamilton, F. Buchanan', 2],
    ['Linnaeus, Carolus', 2],
    ['Montrouzier, X.', 2],
    ['Playfair, R. L. & Günther, Albert Charles Lewis Gotthilf', 4],
    ['Randall, John Ernest Dr.', 2],
    ['Other (34)', 39]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=113)',
    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);