function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cox, L. R.', 2],
    ['Cruz-López, Jesús A. & Francke, Oscar F.', 2],
    ['Lamarck, J. B. P. A. de M. de', 2],
    ['MASSE, JEAN-PIERRE & FENERCI-MASSE, MUKERREM & BUCUR, IOAN I.', 6],
    ['Nguyen, Anh T. T. & Thuy, Kim N. & Arbea, Javier I.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);