function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Angulo, Arturo', 2],
    ['Angulo, Arturo & Betts, Joel T. & González-Alemán, Néstor J.', 2],
    ['Böhlke, James E.', 2],
    ['Böhlke, James E. & Caldwell, David K.', 1],
    ['Carvalho, J. de P. & Pinto, S. Y.', 6],
    ['Dawson, Charles E.', 10],
    ['Feitoza, B. M.', 1],
    ['Fowler, Henry Weed & Bean, Barton A.', 1],
    ['Gilbert, Charles H.', 3],
    ['Gill, T. N.', 3],
    ['Hastings, Philip A. & Springer, Victor G.', 1],
    ['Hildebrand, S. F.', 1],
    ['Laan, Richard Van Der & Eschmeyer, William N. & Fricke, Ronald', 1],
    ['Longley, W. H.', 1],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 10],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=49)',
    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);