function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ayres, W. O.', 1],
    ['Bariche, Michel & Fricke, Ronald', 2],
    ['Bonaparte, Charles Lucien', 1],
    ['Carneiro, Miguel & Martins, Rogélia & Landi, Monica', 3],
    ['Davy, J.', 2],
    ['Diane L. Haas & David A. Ebert', 4],
    ['Ebert, David A. & Wintner, Sabine P. & Kyne, Peter M.', 3],
    ['Edwards, A. J. & Gill, A. C. & Abohweyere, P. O.', 1],
    ['Engelhardt, R.', 1],
    ['Fernando, Daniel & Bown, Rosalind M. K. & Tanna, Akshay', 1],
    ['Goren, Menachem & Galil, Bella S.', 1],
    ['Griffith, E. & Smith, C. H.', 1],
    ['Lowe, R. T.', 2],
    ['Peter Wirtz & Carlos Eduardo L. Ferreira & Sergio R. Floeter', 2],
    ['Risso, A.', 4],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=36)',
    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);