function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Appolloni, Massimo & Smriglio, Carlo & Amati, Bruno', 1],
    ['Fasulo, Giuseppe & Duraccio, Sergio & Federico, Antonio', 1],
    ['Herbert, David G.', 2],
    ['Kiel, Steffen & Sami, Marco & Taviani, Marco', 2],
    ['Locard, A.', 2],
    ['Rosenfeld, Sebastian & Aldea, Cristian & Mansilla, Andres', 2],
    ['Tasso, Vicente & El Haddad, Mustapha & Assadi, Carolina', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);