function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahl, E.', 3],
    ['Axelrod, H. R.', 1],
    ['Blache, J. & Miton, F.', 1],
    ['Bragança, Pedro H. N. & Bellstedt, Dirk U.', 1],
    ['Chambers, J.', 1],
    ['Costa, Wilson J. E. M.', 4],
    ['Hilgendorf, F. M.', 1],
    ['Jubb, R. A.', 1],
    ['Nagy, Béla', 6],
    ['Seegers, Lothar', 4],
    ['Shidlovskiy, Konstantin M. & Watters, Brian R.', 2],
    ['Stefano Valdesalici', 4],
    ['Valdesalici, Stefano', 4],
    ['Wildekamp, R. H.', 6],
    ['Wildekamp, R. H. & Watters, B. R. & Sainthouse, I. F. N.', 2],
    ['Other (10)', 10]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=51)',
    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);