function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bussing, William A. & Bussing, M. I.', 1],
    ['Carneiro, Miguel & Martins, Rogélia & Landi, Monica', 5],
    ['Chapman, W. M.', 2],
    ['Fourmanoir, Pierre', 1],
    ['Johnson, R. K.', 1],
    ['Koefoed, E.', 1],
    ['Laan, Richard Van Der & Eschmeyer, William N. & Fricke, Ronald', 1],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 6],
    ['Marshall, N. B.', 1],
    ['Mead, G. W. & Böhlke, James E.', 1],
    ['Okiyama, Muneo & Johnson, R. K.', 1],
    ['Parr, A. E.', 1],
    ['Rass, T. S.', 1],
    ['Rofen, Robert R.', 4],
    ['Simian, Gaëlle & Abraham, Daniel & Bailly, Nicolas', 1],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=29)',
    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);