function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Gattolliat, Jean-Luc & Samraoui, Boudjema & Benhadji, Nadhira', 1],
    ['Godunko, Roman J. & Martynov, Alexander V.', 1],
    ['Kaltenbach, Thomas & Gattolliat, Jean-Luc', 6],
    ['Kaltenbach, Thomas & Mary, Nathalie & Gattolliat, Jean-Luc', 1],
    ['Kluge, Nikita & Sivaruban, T. & Srinivasan, Pandiarajan', 3],
    ['Kubendran, T. & Balasubramanian, C. & Selvakumar, C.', 1],
    ['Li, Bo & Shi, Weifang & Li, Xianfu & Tong, Xiaoli', 2],
    ['Martynov, Alexander V. & Godunko, Roman J.', 1],
    ['Sivaruban, T. & Srinivasan, Pandiarajan & Barathy, S.', 2],
    ['Zrelli, Sonia & Boumaiza, Moncef & Bejaoui, Mustapha', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);