function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bean, T. H.', 1],
    ['Bleeker, Pieter', 1],
    ['Linnaeus, Carolus', 2],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 2],
    ['Simian, Gaëlle & Abraham, Daniel & Bailly, Nicolas', 3],
    ['Spix, J. B. von & Agassiz, Jean Louis Rodolphe', 1],
    ['Steenstrup, Johannes Japetus Smith', 1],
    ['Storer, D. H.', 1],
    ['Zuiew, B.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);