function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ancey, C. F.', 11],
    ['Breure, Abraham S. H. & Ablett, Jonathan D.', 4],
    ['Draparnaud, Jacques Philippe Raymond', 2],
    ['Emberton, Kenneth C. & Griffiths, Owen L.', 1],
    ['Falniowski, Andrzej & Lewarne, Brian & Rysiewska, Aleksandra', 1],
    ['Frank, Christa', 2],
    ['Henshaw, H. W.', 1],
    ['Lea, I.', 2],
    ['Locard, A.', 1],
    ['Marzuki, Mohammad Effendi bin & Liew, Thor-Seng', 1],
    ['Mighels, J. W.', 2],
    ['Neubert, Eike & Damme, Dirk van', 1],
    ['Pease, W. H.', 2],
    ['Reeve, Lovell A. & Sowerby I, George Brettingham', 1],
    ['Rossmässler, Emil Adolph', 1],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=36)',
    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);