function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barcelos, Lucas A. & Verdade, Vanessa K.', 2],
    ['Cuadrado, Stefania S. & Loor, Yelsin A. & Narváez, Andrea E.', 1],
    ['Miracle, Eulàlia Gassó & Van, Lars W. & Ostende, Den Hoek', 2],
    ['Nicoli, Laura', 16],
    ['Schiesari, Luis & Rossa-Feres, Denise De Cerqueira', 1],
    ['Vanzolini, Paulo E. & Myers, Charles W.', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=25)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);