function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alitto, Renata A. S. & Bueno, Maristela L.', 2],
    ['Gondim, Anne I. & Alonso, Carmen & Dias, Thelma L. P.', 2],
    ['Granja-Fernandez, Rebeca & Herrero-Perezrul, Maria D.', 2],
    ['Granja-Fernández, Rebeca & Pineda-Enríquez, Tania', 4],
    ['Humara-Gil, Karla J. & Granja-Fernández, Rebeca', 1],
    ['Madeira, Patrícia & Kroh, Andreas & Cordeiro, Ricardo', 1],
    ['Martínez, Sergio & Del, Claudia J.', 2],
    ['Pineda-Enriquez, Tania & Solis-Marin, Francisco A.', 2],
    ['Stöhr, Sabine & Weber, Alexandra Anh-Thu & Boissin, Emilie', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    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);