function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Braun, M.', 8],
    ['Buttel-Reepen, H. Von', 2],
    ['Diesing, Carl Moritz', 4],
    ['Leidy, Joseph', 5],
    ['Levinsen, G. M. R.', 6],
    ['Linstow, O. F. B. von', 2],
    ['Linton, E.', 27],
    ['Looss, A.', 7],
    ['MacCallum, G. A.', 3],
    ['MacCallum, William George', 2],
    ['Molin, R.', 13],
    ['Monticelli, F. S.', 3],
    ['Poirier, J.', 9],
    ['Stafford, J.', 5],
    ['Stossich, M.', 21],
    ['Other (14)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=131)',
    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);