function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bjerkander, Clas', 1],
    ['Fabricii, Ioh. Christ.', 1],
    ['Fabricius, Johann Christian', 13],
    ['Fallén, Carl Fredrik', 1],
    ['Fuessly, Johann Caspar', 1],
    ['Harris, Moses', 2],
    ['Linnaeus, Carolus', 14],
    ['Müller, Otto Friedrich', 1],
    ['Panzer, Georg Wolfgang Franz', 1],
    ['Preyssler, J. D.', 1],
    ['Schrank, Franz von Paula', 14],
    ['Scopoli, G. A.', 15],
    ['Scopoli, Ioannis Antonii', 1],
    ['Walker, Francis', 1],
    ['Waltl, Joseph', 1],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=69)',
    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);