function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barcelos, Luis MD & Rodrigues, Pedro R & Bried, Joel', 2],
    ['Boano, Giovanni & Belemsobgo, Urbain & Silvano, Fabrizio', 4],
    ['Boddaert, Pieter', 2],
    ['Frahnert, Sylke & Turner, Donald A. & Bracker, Cordula', 1],
    ['Hermann, Johann', 2],
    ['Jansen, Justin J. F. J.', 2],
    ['Linnaeus, Carolus', 9],
    ['Müller, Philipp Ludwig Statius', 1],
    ['Pennant, Thomas', 1],
    ['Sparrman, Andreas', 1],
    ['Vieillot, Louis Pierre', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=27)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);