function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Boano, Giovanni & Belemsobgo, Urbain & Silvano, Fabrizio', 1],
    ['Boev, Zlatozar & Spassov, Nikolaï', 1],
    ['Elzanowski, Andrzej & Louchart, Antoine', 1],
    ['Linnaeus, Carolus', 5],
    ['Mathews, Gregory M.', 1],
    ['Maxwell, Erin E.', 1],
    ['Maxwell, Erin E. & Larsson, Hans C. E.', 1],
    ['Mourer-Chauviré, Cécile & Geraads, Denis', 1],
    ['Nguyen, Jacqueline M. T. & Boles, Walter E. & Hand, Suzanne J.', 2],
    ['Potts, Thomas Henry', 1],
    ['Tennyson, Alan J. D. & Palma, Ricardo L. & Robertson, Hugh A.', 1],
    ['Vieillot, Louis Pierre', 1],
    ['Worthy, Trevor H. & Handley, Warren D. & Archer, Michael', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);