function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['El Alami, Majida & Vuataz, Laurent & El Yaagoubi, Sara', 1],
    ['Gattolliat, Jean-Luc & Samraoui, Boudjema & Benhadji, Nadhira', 1],
    ['Phlai-ngam, Sirikamon & Tungpairojwong, Nisarat', 1],
    ['Sartori, Michel & Bauernfeind, Ernst', 1],
    ['Sohil, Asha & Srinivasan, Pandiarajan & Sivaruban, T.', 1],
    ['Yanai, Zohar & Sroka, Pavel & Gattolliat, Jean-Luc', 2],
    ['Zrelli, Sonia & Gattolliat, Jean-Luc & Boumaïza, Moncef', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=9)',
    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);