function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Becherer', 3],
    ['Gonella, Paulo Minatel & Rivadavia, Fernando & Sano, Paulo Takeo', 2],
    ['Gonella, Paulo Minatel & Sano, Paulo Takeo & Rivadavia, Fernando', 35],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 5],
    ['Howell, Nathan & Krings, Alexander & Braham, Richard R', 2],
    ['Info Flora', 5],
    ['Jarvis, Charlie', 7],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 5],
    ['Krueger, Thilo & Fleischmann, Andreas', 3],
    ['Linnaeus, Carolus', 6],
    ['Paulo Minatel Gonella & Fernando Rivadavia & Andreas Fleischmann', 3],
    ['Rivadavia, Fernando & Gonella, Paulo Minatel', 2],
    ['Rivadavia, Fernando & Gonella, Paulo Minatel & Sano, Paulo Takeo', 7],
    ['Rjosk, A. & Neinhuis, C. & Monizi, M. & Lautenschläger, T.', 10],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 8],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=108)',
    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);