function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abrahão, Vitor & Mol, Jan & Pinna, Mario De', 1],
    ['Dahl, G.', 1],
    ['De Pinna, Mário C. C. & Ferraris, Carl J. & Vari, Richard P.', 8],
    ['Delsman, N. C.', 1],
    ['Eigenmann, C. H.', 1],
    ['Eigenmann, C. H. & Henn, A. W. & Wilson, C.', 1],
    ['Ferraris, Carl J. & Brown, B. A.', 1],
    ['Fowler, Henry Weed', 1],
    ['Gill, T. N.', 1],
    ['Kner, R.', 1],
    ['Laan, Richard Van Der & Eschmeyer, William N. & Fricke, Ronald', 2],
    ['Lundberg, John G. & Rapp-Py-Daniel, L. H.', 1],
    ['Mojica, José Ivan & Agudelo-Zamora, Henry D.', 1],
    ['Sébastien Brosse & Fréderic Melki & Régis Vigouroux', 2],
    ['Vari, Richard P. & Ferraris Jr, Carl J. & de Pinna, Mário C. C.', 39],
    ['Other (7)', 7]
  ]);
  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);