function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alcock, Alfred William', 2],
    ['Bean, T. H.', 1],
    ['Bonaparte, Charles Lucien', 1],
    ['Filhol, Henri', 1],
    ['Gilbert, Charles H.', 1],
    ['Gilbert, Charles H. & Cramer, F.', 2],
    ['Gill, T. N. & Townsend, C. H.', 3],
    ['Gon, Ofer & Miya, Tshoanelo & Mcmillan, Peter & Leslie, Robin', 1],
    ['Goode, G. B.', 1],
    ['Goode, G. B. & Bean, T. H.', 1],
    ['Günther, Albert Charles Lewis Gotthilf', 7],
    ['Koefoed, E.', 1],
    ['Mcmillan, Peter & Iwamoto, Tomio & Stewart, Andrew', 7],
    ['Radcliffe, L.', 9],
    ['Weber, M.', 5],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=50)',
    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);