function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bertolino, Marco & Costa, Gabriele & Bavestrello, Giorgio', 3],
    ['Bertolino, Marco & Costa, Gabriele & Reboa, Anna', 1],
    ['Calcinai, Barbara & Bavestrello, Giorgio & Bertolino, Marco', 1],
    ['Cristobo, Javier & Almón, Bruno & Pérez, Jacinto & Ríos, Pilar', 2],
    ['Diaz, Maria Cristina & Nuttall, Marissa & Pomponi, Shirley A.', 1],
    ['Gray, John Edward', 1],
    ['Mothes, Beatriz & Campos, Maurício & Lerner, Cléa', 2],
    ['Mothes, Beatriz & De, Maurício A. & Campos', 2],
    ['Van, Rob W. M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    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);