function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Kindi, Mohammed & Pickford, Martin & Al-Sinani, Yusouf', 1],
    ['Gagnaison, Cyril & Mennecart, Bastien & Bailleul, Julien', 1],
    ['Gernelle, Killian & Lihoreau, Fabrice & Boisserie, Jean-Renaud', 3],
    ['Ginsburg, Léonard & Cheneval, Jacques & Janvier, Philippe', 1],
    ['Miller, Ellen R. & Gunnell, Gregg F. & Gawad, Mohammad Abdel', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=20)',
    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);