function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cadenat, J.', 1],
    ['Carvalho-Filho, Alfredo & Sazima, Ivan', 5],
    ['Evermann, Barton Warren & Marsh, M. C.', 1],
    ['Fowler, Henry Weed', 1],
    ['Guimarães, Ricardo Z. P. & Nunan, Gustavo W.', 1],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 7],
    ['Smith-Vaniz, William F. & Jelks, Howard L.', 1],
    ['Springer, Victor G.', 4],
    ['Zarco Perello, Salvador & Moreno Mendoza, Rigoberto', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);