function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aguilar-Camacho, Jose Maria & Carballo, Jose Luis', 1],
    ['Dinn, Curtis & Leys, Sally P. & Roussel, Mylène & Méthé, Denise', 1],
    ['Göcke, Christian & Janussen, Dorte', 2],
    ['Lehnert, Helmut & Stone, Robert P.', 4],
    ['Santos, George Garcia & Silva, Lícia Pires Da & Alliz, Adélia', 1],
    ['Van, Rob W. M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=10)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);