function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baturina, N. S.', 1],
    ['Bowles, David E. & Cheri, Cameron & Usrey, Faron D.', 1],
    ['Embacher, G. & Malicky, H. & A. E & R. A', 6],
    ['Fabricius, Johann Christian', 1],
    ['Linnaeus, Carolus', 23],
    ['Mey, Wolfram & Malicky, Hans', 2],
    ['Müller, Otto Friedrich', 1],
    ['Panich-Pat, Thanawan & Prommi, Taeng On', 1],
    ['Parey, Sajad H. & Saini, Malkiat S.', 5],
    ['Piller, Mathias & Mitterpacher, Ludovico', 1],
    ['Poda, Nicolaus', 1],
    ['Retzius, Anders Ja ̊ han', 1],
    ['Robinson, Jason L. & Thomas, M. Jared & Heads, Sam W.', 1],
    ['Schrank, Franz von Paula', 1],
    ['Scopoli, G. A.', 1],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=48)',
    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);