function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Agassiz, A.', 1],
    ['Anquetin, Jérémy & Barrett, Paul M. & Jones, Marc E. H.', 1],
    ['Azar, Dany & Nel, André & Perrichot, Vincent', 1],
    ['Eschscholtz, Johann Friedrich von', 2],
    ['Esu, Daniela & Girotti, Odoardo & Truc, Georges', 2],
    ['Grygier, Mark J.', 2],
    ['Haeckel, E. H. P. A.', 5],
    ['Keyserling, Eugen von', 2],
    ['Lamarck, J. B. P. A. de M. de', 2],
    ['Linnaeus, Carolus', 12],
    ['Pérez-García, Adán & Murelaga, X.', 2],
    ['Richard, Jules', 2],
    ['Scopoli, G. A.', 16],
    ['Wright, T. S.', 3],
    ['de Buen, F.', 2],
    ['Other (46)', 46]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=101)',
    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);