function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Gattolliat, Jean-Luc & Samraoui, Boudjema & Benhadji, Nadhira', 1],
    ['Kaltenbach, Thomas & Vuataz, Laurent & Samraoui, Boudjema', 2],
    ['L, Carlos Naranjo & Peters, Janice G. & del, Pedro López', 1],
    ['Martynov, A. V. & Palatov, D. M. & Gattolliat, J. - L.', 1],
    ['Suter, P. J. & Webb, J. M. & Gattolliat, J. - L.', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);