function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barros, Thales & Cavalcanti, Thaynã & Hajdu, Eduardo', 8],
    ['Bertolino, Marco & Costa, Gabriele & Reboa, Anna', 1],
    ['Cavalcanti, Thaynã & Santos, George Garcia & Pinheiro, Ulisses', 1],
    ['Deshmukh, Umakant Bhoopati & Hernández, José Amet Rivaz', 1],
    ['Fernandez, Julio C. C. & Cárdenas, César A. & Bravo, Alejandro', 7],
    ['Goodwin, Claire & Brickle, Paul', 1],
    ['Göcke, Christian & Janussen, Dorte', 4],
    ['Ott, B. & Reiswig, H. M. & Harbo, R.', 3],
    ['Schejter, Laura & Cristobo, Javier & Ríos, Pilar', 2],
    ['Topsent, Émile', 2],
    ['Van Soest, Rob W. M.', 1],
    ['Van, Rob W. M.', 1],
    ['de Laubenfels, Max Walker', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=33)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);