function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blainville, H. M. D. de', 1],
    ['Cavallari, Daniel C. & Dornellas, Ana Paula S.', 1],
    ['Donovan, D. T. & Strugnell, J. M.', 2],
    ['Lamarck, J. B. P. A. de M. de', 3],
    ['Leach, William Elford', 1],
    ['Lesueur, Charles Alexandre', 5],
    ['Migliavacca, Paulo Presti & Simone, Luiz Ricardo L.', 2],
    ['Schneider, J. G.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);