function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Fabricii, Ioh. Christ.', 1],
    ['Fabricii, Othonis', 1],
    ['Fabricius, Johann Christian', 1],
    ['Kitrytė, Neringa & Baltrūnaitė, Laima', 2],
    ['Linnaeus, Carolus', 41],
    ['Palma, Ricardo L. & Peck, Stewart B.', 1],
    ['Reeves, Will K. & Durden, Lance A. & Wrenn, William J.', 2],
    ['Schrank, Francisci von Paula', 1],
    ['Schrank, Franz von Paula', 5],
    ['Scopoli, G. A.', 8],
    ['Williams, D. J. & Z. - Q', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=64)',
    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);