function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aguilar-Camacho, Jose Maria & Carballo, Jose Luis', 4],
    ['Bertolino, Marco & Cerrano, Carlo & Bavestrello, Giorgio', 2],
    ['Cavalcanti, Thaynã & Santos, George Garcia & Pinheiro, Ulisses', 5],
    ['Gray, John Edward', 1],
    ['Ott, B. & Mcdaniel, N. & Humphrey, E.', 4],
    ['Pestana, Rosa & Ribeiro, Cláudia & Boury-Esnault, Nicole', 1],
    ['Recinos, Radharanne & Pinheiro, Ulisses & Willenz, Philippe', 3],
    ['Santos, George Garcia & França, Fernando & Pinheiro, Ulisses', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=24)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);