function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Angulo, Arturo', 4],
    ['Angulo, Arturo & Betts, Joel T. & González-Alemán, Néstor J.', 3],
    ['Bleeker, Pieter', 2],
    ['Cervigón, Fernando', 1],
    ['Dresel, H. G.', 1],
    ['Evermann, Barton Warren & Marsh, M. C.', 1],
    ['Fowler, Henry Weed', 1],
    ['Gill, T. N.', 1],
    ['Goode, G. B.', 2],
    ['Goode, G. B. & Bean, T. H.', 3],
    ['Hoshino, Koichi & Amaoka, Kunio', 1],
    ['Jordan, David Starr & Gilbert, Charles H.', 1],
    ['Jordan, David Starr & Goss, D. K.', 2],
    ['Lin, Chien-Hsiang & Nolf, Dirk', 1],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 7],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    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);