function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Benzoni, Francesca & Stefani, Fabrizio', 2],
    ['Chaix, Christian & Galloni, Françoise & Ferrandini, Michelle', 1],
    ['Chaix, Christian & Martin, Jean-Paul Saint', 7],
    ['Claereboudt, Michel R.', 1],
    ['Crossland, C.', 3],
    ['Cuvier, Georges', 1],
    ['Ehrenberg, Christian Gottfried', 1],
    ['Fassbender, Nico & Stefanoudis, Paris V', 1],
    ['Forsman, Zac H. & Birkeland, Charles', 1],
    ['Medina-Rosas, Pedro & López-Pérez, Andrés', 1],
    ['Samiei, Jahangir Vajed & Dab, Koosha & Ghezellou, Parviz', 5],
    ['Vaughan, T. W.', 5],
    ['Veron, John Edward Norwood', 2],
    ['Verrill, Addison Emery', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=32)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);